ANSI C Programming solution Chapter-three
Operators and Expression
Chapter three(03) Contains
01.Arithmetic Operators
03.Logical Operators
04.Assignment Operators
05.Increment and Decrement Operators
06.Conditional Operators
07.Bitwise Operators
08.Special Operators
09.Arithmetic Expressions
10.Evalution Expressions
11.Precedence of Arithmetic
Operators
12.Some Computational Problems
13.Type Conversions in Expressions
14. Operator Precedence and Associativity
15.Mathematical Functions
Question No-3.2:write a program that reads a floating-point number and then displays right-most digit of the integral part of the number.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int a,e;
float p;
clrscr();
printf("Enter the value of p\n");
scanf("%f",&p);
a=int(p);
printf("%d\n",a);
e=a%10;
if(a>10)
printf("%d\n",e);
getch();
}
Question No.3.1: Given the values of the variables X,Y and Z write a program to rotate their values such that X has the value of Y,Y has the value of Z and Z has the value of X.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int x,y,z,temp;
clrscr();
printf("Enter the value of x,y,z\n");
scanf("%d %d %d",&x,&y,&z);
temp=x;
x=y;
y=z;
z=temp;
printf("%d %d %d",x,y,z);
getch();
}
Question No-3.3. Modify the above program to display to right-most digits of the integral part of the number.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int a,e;
clrscr();
printf("Enter the value of a\n");
scanf("%d",&a);
e=a%100;
if(a>100)
printf("%d\n%d\n",a,e);
getch();
}
Question No-3.4: Write a program that will obtain the length and width of a rectangle from the user and compute its area and perimeter.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int length,width;
clrscr();
float area,perimeter;
printf("Enter the value of length,width\n");
scanf("%d %d",&length,&width);
area=(length*width);
perimeter=2*(length+width);
printf("%f %f",area,perimeter);
getch();
}
Question No-3.5: Given an integer number, write a program that displays the number as follows:
First line: all digits
Second line: all except first digit
Third line: all except first two digits
…………
Last line: The last digit
For example the number 5678 will be displayed as:
5 6 7 8
6 7 8
8
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c,e,x;
float p;
clrscr();
printf("Enter the value of p\n");
scanf("%f",&p);
a=int(p);
printf("%d\n",a);
e=a%10000;
b=e%1000;
c=b%100;
x=c%10;
if(a>10000)
printf("%d\n%d\n%d\n%d\n%d\n ",a,e,b,c,x);
else if(a>1000)
printf("%d\n%d\n%d\n%d\n ",a,b,c,x);
else if(a>100)
printf("%d\n%d\n%d\n",a,c,x);
else if(a>10)
printf("%d\n%d\n",a,x);
getch();
}
Question No-3.6:The straight-line method of computing the yearly depreciation of the value of an item is given by
Depreciation=
Write a program to determine the salvage value of an item when the purchase price , years of service, and the annual depreciation are given.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int years;
float s, d,p;
clrscr();
printf("Enter the value of years,d,p\n");
scanf("%d %f %f",&years,&d,&p);
s=p-(years*d);
printf("%f",s);
getch();
}
Question No-3.7: Write the program that will read a real number from the keyboard and print the following output in one line:
Smallest integer The given Largest integer
not less then number not greater than
the number the number
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
float m;
int n,p;
clrscr();
printf("Enter the value of m\n");
scanf("%f",&m);
n=(m/1)+1;
p=m;
printf("%d %f %d",n,m,p);
getch();
}
Question No-3.8: The total distance travelled by a vehicle in t seconds is given by Distance= ut+(at2)/2
Where u is the initial velocity( meter per second),a is the acceleration (meter per second2). Write a program to evaluate the distance travelled at intrevales of time, give the value of u and a. the program should provide the flexibility to the user to select his own time intervals and repeat the calculation for different value of u and a.
Solution
#include<conio.h>
void main()
{
int a,u,t;
float distance;
clrscr();
printf("Enter the value of a,u,t\n");
scanf("%d %d %d",&a,&u,&t);
distance=u*t+(a*t*t)/2;
printf("%f",distance);
getch();
}
Question No-3.9: In inventory management ,the Economic Order Quantity for a single item is given by
EOQ=sqrt { ( 2*demand rate*setup rate )/(holding cost per item per unit time )}
And the Time Between Orders
TBO=sqrt{( 2* setup cost )/(demand rate*holding cost per item per unit time ) }
Solution 1:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{ float EOQ,d,s,h,x;
Clrscr();
printf("Enter the value of d,s,h\n");
scanf("%f %f %f",&d,&s,&h);
x=(2*d*s)/h;
EOQ=sqrt(x);
printf("%f",EOQ);
getch();
}
Question No 2:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float x,s,d,h,TOB;
clrscr();
printf("Enter the value of s,d,h\n");
scanf("%f%f%f",&s,&d,&h);
x=(2*s)/(d*h);
TOB=sqrt(x);
printf("%f",TOB);
getch();
}
Question No-3.10: For a certain electrical circuit with an inductance L and resistance R,the damped natural frequency is given byFrequency=sqrt { (1/L*C )-( R*R/4*C*C ) }
It is desired to study the variation of this frequency with C(capacitance).Write a program to calculate the frequency for different values of C starting from 0.01 to 0.1 in steps of 0.01.
Depreciation=
Write a program to determine the salvage value of an item when the purchase price , years of service, and the annual depreciation are given.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int years;
float s, d,p;
clrscr();
printf("Enter the value of years,d,p\n");
scanf("%d %f %f",&years,&d,&p);
s=p-(years*d);
printf("%f",s);
getch();
}
Question No-3.7: Write the program that will read a real number from the keyboard and print the following output in one line:
Smallest integer The given Largest integer
not less then number not greater than
the number the number
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
float m;
int n,p;
clrscr();
printf("Enter the value of m\n");
scanf("%f",&m);
n=(m/1)+1;
p=m;
printf("%d %f %d",n,m,p);
getch();
}
Question No-3.8: The total distance travelled by a vehicle in t seconds is given by Distance= ut+(at2)/2
Where u is the initial velocity( meter per second),a is the acceleration (meter per second2). Write a program to evaluate the distance travelled at intrevales of time, give the value of u and a. the program should provide the flexibility to the user to select his own time intervals and repeat the calculation for different value of u and a.
Solution
#include<conio.h>
void main()
{
int a,u,t;
float distance;
clrscr();
printf("Enter the value of a,u,t\n");
scanf("%d %d %d",&a,&u,&t);
distance=u*t+(a*t*t)/2;
printf("%f",distance);
getch();
}
Question No-3.9: In inventory management ,the Economic Order Quantity for a single item is given by
EOQ=sqrt { ( 2*demand rate*setup rate )/(holding cost per item per unit time )}
And the Time Between Orders
TBO=sqrt{( 2* setup cost )/(demand rate*holding cost per item per unit time ) }
Solution 1:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{ float EOQ,d,s,h,x;
Clrscr();
printf("Enter the value of d,s,h\n");
scanf("%f %f %f",&d,&s,&h);
x=(2*d*s)/h;
EOQ=sqrt(x);
printf("%f",EOQ);
getch();
}
Question No 2:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float x,s,d,h,TOB;
clrscr();
printf("Enter the value of s,d,h\n");
scanf("%f%f%f",&s,&d,&h);
x=(2*s)/(d*h);
TOB=sqrt(x);
printf("%f",TOB);
getch();
}
Question No-3.10: For a certain electrical circuit with an inductance L and resistance R,the damped natural frequency is given byFrequency=sqrt { (1/L*C )-( R*R/4*C*C ) }
It is desired to study the variation of this frequency with C(capacitance).Write a program to calculate the frequency for different values of C starting from 0.01 to 0.1 in steps of 0.01.
Solution
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float L,R,C,x,a,b,F;
clrscr();
printf("Enter the value of L,R,C\n");
scanf("%f %f %f",&L,&R,&C);
a={ (1/L*C) – (R*R/4*C*C) };
F=sqrt(a);
Printf(“%f”,F);
getch();
}
Question No-3.11: Write program to read a four digit integer and print the sum of its digit. Hints: Use / and % operators.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int num,a,b,c,d,x,y,result;
clrscr();
printf("Enter a number");
scanf("%d",&num);
a=num%10;
x=num/10;
b=x%10;
y=x/10;
c=y%10;
d=y/10;
result=a+b+c+d;
printf("%d",result);
getch();
}
Question No-3.12: Write a program to print the size of various data types in C.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int m;
clrscr();
m=sizeof(10);
printf("Size=%d",m);
getch();
}
Question No-3.13: Given three values, write a program to read three values from keyboard and print out the largest of them without using if statement.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int x,y,z,a,b;
printf("Enter the value of x,y,z\n");
scanf("%d%d%d",&x,&y,&z);
printf("largest\n");
a=(x>y)?x:y
b=(a>z)?a:z
printf("%d",b);
}
Question No-3.14: Write a program to read two integer values m and n and to decide and print whether m is multiple of n.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int m,n;
printf("Enter m & n,m>=n:");
scanf("%d %d",&m,&n);
if(m%n==0)
printf("m is a multiple of n");
else
printf("m is not a multiple of n");
getch();
}
Question No-3.15: Write a program to read three values using scanf statement and print the following results:
(a)Sum of the values
(b) Average of the three values
(c) Largest of the three
(d) Smallest of the three.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c,x,y;
float sum, average;
clrscr();
printf("Enter the value of a,b,c\n");
scanf("%d%d%d",&a,&b,&c);
sum=(a+b+c);
printf("sum=%f\n",sum);
{
average=sum/3;
printf("average=%f\n",average);
}
{
printf("Largest\n");
x=(a>b)?a:b;
y=(x>c)?x:c;
printf("%d\n",y);
}
{
printf("Smallest\n");
x=(a<b)?a:b;
y=(x<c)?x:c;
printf("%d\n",y);
}
getch();
}
Question No-3.16: The cost of one type of mobile service is Rs.250 plus Rs.1.25 for each call made over and above 100 calls. Write a program to read customer codes and calls made and print the bill for each customer.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int code,call;
float bill;
clrscr();
printf("Enter customer code and number of calls made:");
scanf("%d %d",&code,&call);
bill=250+(call*1.25);
printf("Bill=%f",bill);
getch();
}
Question No-3.17: Write a program to print a table of sin and cos functions for the interval 0 180 degrees in increments of 15 as shown below.
-----------------------------------------------------------------------------------------------
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float L,R,C,x,a,b,F;
clrscr();
printf("Enter the value of L,R,C\n");
scanf("%f %f %f",&L,&R,&C);
a={ (1/L*C) – (R*R/4*C*C) };
F=sqrt(a);
Printf(“%f”,F);
getch();
}
Question No-3.11: Write program to read a four digit integer and print the sum of its digit. Hints: Use / and % operators.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int num,a,b,c,d,x,y,result;
clrscr();
printf("Enter a number");
scanf("%d",&num);
a=num%10;
x=num/10;
b=x%10;
y=x/10;
c=y%10;
d=y/10;
result=a+b+c+d;
printf("%d",result);
getch();
}
Question No-3.12: Write a program to print the size of various data types in C.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int m;
clrscr();
m=sizeof(10);
printf("Size=%d",m);
getch();
}
Question No-3.13: Given three values, write a program to read three values from keyboard and print out the largest of them without using if statement.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int x,y,z,a,b;
printf("Enter the value of x,y,z\n");
scanf("%d%d%d",&x,&y,&z);
printf("largest\n");
a=(x>y)?x:y
b=(a>z)?a:z
printf("%d",b);
}
Question No-3.14: Write a program to read two integer values m and n and to decide and print whether m is multiple of n.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int m,n;
printf("Enter m & n,m>=n:");
scanf("%d %d",&m,&n);
if(m%n==0)
printf("m is a multiple of n");
else
printf("m is not a multiple of n");
getch();
}
Question No-3.15: Write a program to read three values using scanf statement and print the following results:
(a)Sum of the values
(b) Average of the three values
(c) Largest of the three
(d) Smallest of the three.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c,x,y;
float sum, average;
clrscr();
printf("Enter the value of a,b,c\n");
scanf("%d%d%d",&a,&b,&c);
sum=(a+b+c);
printf("sum=%f\n",sum);
{
average=sum/3;
printf("average=%f\n",average);
}
{
printf("Largest\n");
x=(a>b)?a:b;
y=(x>c)?x:c;
printf("%d\n",y);
}
{
printf("Smallest\n");
x=(a<b)?a:b;
y=(x<c)?x:c;
printf("%d\n",y);
}
getch();
}
Question No-3.16: The cost of one type of mobile service is Rs.250 plus Rs.1.25 for each call made over and above 100 calls. Write a program to read customer codes and calls made and print the bill for each customer.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int code,call;
float bill;
clrscr();
printf("Enter customer code and number of calls made:");
scanf("%d %d",&code,&call);
bill=250+(call*1.25);
printf("Bill=%f",bill);
getch();
}
Question No-3.17: Write a program to print a table of sin and cos functions for the interval 0 180 degrees in increments of 15 as shown below.
-----------------------------------------------------------------------------------------------
x(degees) sin(x) cos(x)
O ……. …….
15 .…… …….
….. ……. …….
Solution
#include<stdio.h>
#include<conio.h>
#include<math.h>
#define p1 3.1416
#define MAX 180
void main()
{
int i;
float x,y,z;
clrscr();
i=0;
printf("x(degree) sin(x) cos(x)\n");
while(i<=MAX)
{
x=(p1/MAX)*i;
y=sin(x);
z=cos(x);
printf("%d\n %f\n %f\n",i,y,z);
i=i+15;
}
getch();
}
Question No-3.18: Write a program to compute the values of square-roots and squares of the number 0 to 100 in steps 10 print the output in a tabular form as shown below.-----------------------------------------------------------------------------------------------
O ……. …….
15 .…… …….
….. ……. …….
Solution
#include<stdio.h>
#include<conio.h>
#include<math.h>
#define p1 3.1416
#define MAX 180
void main()
{
int i;
float x,y,z;
clrscr();
i=0;
printf("x(degree) sin(x) cos(x)\n");
while(i<=MAX)
{
x=(p1/MAX)*i;
y=sin(x);
z=cos(x);
printf("%d\n %f\n %f\n",i,y,z);
i=i+15;
}
getch();
}
Question No-3.18: Write a program to compute the values of square-roots and squares of the number 0 to 100 in steps 10 print the output in a tabular form as shown below.-----------------------------------------------------------------------------------------------
number Square-root square
0 0 0
100 10 10000
Solution
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
/*......square root and square of numbers 0 to 100.....*/
int i,y;
float x;
clrscr();
printf("Number\tSquare root\tSquare\n\n");
for(i=0;i<=100;i++)
{
x=sqrt(i);
y=i*i;
printf("%d\t%f\t%d\n",i,x,y);
}
getch();
}
Question No-3.20: Write a program to illustrate the use of cast operator in a real life situation.
Solution
include<stdio.h>
#include<conio.h>
void main()
{
float sum;
int n;
clrscr();
sum=0;
for(n=1;n<=10;++n)
{
sum=sum+1/(float)n;
printf("%2d %6.4f\n",n,sum);
}
getch();
}
Question No-3.19: Write a program that determines whether a given integer is odd or even and displays the number and description on the same line.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int x;
clrscr();
printf("Enter the integer number:");
scanf("%d",&x);
if(x%2==0)
printf("THe number %d is even",x);
else
printf("The number %d is odd",x);
getch();
}
0 0 0
100 10 10000
Solution
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
/*......square root and square of numbers 0 to 100.....*/
int i,y;
float x;
clrscr();
printf("Number\tSquare root\tSquare\n\n");
for(i=0;i<=100;i++)
{
x=sqrt(i);
y=i*i;
printf("%d\t%f\t%d\n",i,x,y);
}
getch();
}
Question No-3.20: Write a program to illustrate the use of cast operator in a real life situation.
Solution
include<stdio.h>
#include<conio.h>
void main()
{
float sum;
int n;
clrscr();
sum=0;
for(n=1;n<=10;++n)
{
sum=sum+1/(float)n;
printf("%2d %6.4f\n",n,sum);
}
getch();
}
Question No-3.19: Write a program that determines whether a given integer is odd or even and displays the number and description on the same line.
Solution
#include<stdio.h>
#include<conio.h>
void main()
{
int x;
clrscr();
printf("Enter the integer number:");
scanf("%d",&x);
if(x%2==0)
printf("THe number %d is even",x);
else
printf("The number %d is odd",x);
getch();
}
Download the solution of the books.For Download E.Balagurusamy ANSI C Programming e-book solution check the button
Arithmetic Operators, Logical Operators, Assignment Operators,Relational Operators, Special Operators, Evalution Expressions, Precedence of Arithmetic Operators, Bitwise Operators, Arithmetic Expressions, Conditional Operators, Some Computational Problems, Operator Precedence and Associativity,Increment and Decrement Operators, Mathematical Functions, Type Conversions in Expressions--these kinds of topics can be know after study this chapter three(03).
