C programs for exam practical question cum Solutions

21/01/2014 15:41

Calculate Simple interest using for Loop

/*calculation of simple interest for 3 sets of p,n and r */
#include
 int main()
{
int p,n,count;
float r,si;
for(count=1; count<=3; count=count+1)
 {
 printf("Enter values of p,n and r");
 scanf("%d %d%f", &p,&n,&r);
 si=p*n*r/100;
printf(simple interest=%f\n",si);
 }
 return 0;
 }
 

Calculate factorial of a number using while loop

#include
#include
void main()
{
int i=2,n;
float fact=1;
printf("Factorial of n\n\nEnter n:");
scanf("%d",&n);
while(i<=n)
{
fact=fact*i;
i++;
}
printf("%d! = %.0f",n,fact);
}
 

 

A program to find if a number is armstrong or not

#include
#include 
void main()
{
int num,sum=0,temp,r;
 
printf("Enter an integer\n");
scanf("%d",&number);
 
   temp = num;
 
   while( temp != 0 )
   {
      r = temp%10;
      sum = sum + r*r*r;
      temp = temp/10;
   }
 
   if ( num == sum )
      printf("Entered number is an armstrong number.\n");
   else
      printf("Entered number is not an armstrong number.\n");
 
  getch();
}
 

Program to get power of a number with another number

#include
#include
int main()
{
  int pow,num,i=1;
  long int sum=1;
  printf("\nEnter a number: ");
  scanf("%d",&num);
  printf("\nEnter power: ");
  scanf("%d",&pow);
  while(i<=pow){
            sum=sum*num;
            i++;
  }
  printf("\n%d to the power %d is: %ld",num,pow,sum);
getch();
}
 
 

A programme to print "welcome" 5 times

 
#include
#include
int main()
{
int count = 0;
while (count < 5) 
{
  printf("Welcome to C++");
  count++;
}
getch();
}
 

Program to display 1-10 using while loop

#include
#include
void main()
{
    int i=1;
    while(i <= 10)
    {
        printf("%d\n",i);
        i++;
    }
    getch();
}

 

 

Program to display 1-20 even numbers while loop

#include
#include
void main()
{
    int i=1;
while(i<20)
{
if(i%2 != 0) 
}
{
int i=1;
while(i<20)
{
if(i%2 != 0)
printf("%d",i);
i++;
}
getch();
}
 

Program to display 10-1 even numbers for loop

#include
#include 
void main()
{
int count;
for(count = 1; count <= 10; count++)
printf("%d ", count);
printf("\n");
getch();
}
 
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