Important C programs for C for Problem Solving for I and II sem of Engineering Students (As per VTU)

 C program to calculate simple interest.

# include<stdio.h>
void main()
{
float p, t, r, si;

printf("Enter P T R ");
scanf("%f%f%f",&p,&t,&r);

si=(p*t*r)/100;

printf("\n Simple Interest is %f", si);
}

Output:
Enter P T R 
100 5 5 [Enter Key]
Simple Interest is 
25.00

 C program to calculate area and perimeter of rectangle.

# include<stdio.h>
void main()
{
float l, b, area, per;

printf("Enter length and breadth of rectangle  ");
scanf("%f%f", &l, &b);

area=l*b;

per=2*(l+b);

printf("\n Area of rectangle is %f", area);

printf("\n Perimeter rectangle is %f", per);

}

Output:
Enter length and breadth of rectangle
10 20 [Enter Key]
Area of rectangle is 200.00
Perimeter of rectangle is 60.00

C program to check for PALINDROME or not.

# include<stdio.h>
void main()
{
int n, rem, rev=0, temp;

printf("Enter a number to be check   ");
scanf("%d",&n);

temp=n;

while (n!=0)

{

rem=n%10;

rev=(rev*10)+rem;

n=n/10;

}

if (rev==temp)

printf("\n PALINDROME");

else

printf("\n NOT Palindrome ");

}

Output:

Enter a number to be check

123

NOT Palindrome

Output:

Enter a number to be check

121

PALINDROME