C programming Question and Answer Day-12

56. Add 'n' numbers.

#include<stdio.h>
#include<conio.h>
void main()
{
   int n, sum=0, i, value;
   clrscr();

   printf("Enter total numbers you want to add : ");
   scanf("%d", &n);

   for (i=1; i<=n; i++)
   {
      printf("Enter number %d : ", i);
      scanf("%d", &value);
      sum = sum + value;
   }

   printf("Sum of entered numbers : %d", sum);
   getch();
}

57. Add 'n' numbers using array.

#include<stdio.h>
#include<conio.h>
void main()
{
    int n, sum = 0, i, array[100];
    clrscr();
    printf("Enter total numbers you want to add : ");
    scanf("%d", &n);

    for (i = 1; i <= n; i++)
    {
        printf("Enter number %d : ", i);
        scanf("%d", &array[i]);
        sum = sum + array[i];
    }
    printf("Sum : %d\n", sum);
    getch();
}

58. Program to accept a number and add the digits of that number.

#include<stdio.h>
#include<conio.h>
void main()
 {
 int n, sum = 0, remainder;
 clrscr();

 printf("Enter the number : ");
 scanf("%d", &n);

 while (n != 0) 
 {
  remainder = n % 10;
  sum = sum + remainder;
  n = n / 10;
 }

 printf("Sum of digits of entered number : %d", sum);
 getch();
}

59. Program to accept a number and add the digits of that number using recursion.

#include<stdio.h>
#include<conio.h>

int add_digits(int);

void main()
{
    int n, result;
    clrscr();
    printf("Enter a number : ");
    scanf("%d", &n);

    result = add_digits(n);

    printf("Sum : %d", result);
    getch();
}

int add_digits(int n)
{
    static int sum = 0;
    if (n == 0)
    {
        return 0;
    }
    sum = n % 10 + add_digits(n / 10);
    return sum;
}

60. Average of numbers.

#include<stdio.h>
#include<conio.h>
void main()
{
    int n, i;
    float sum=0, x, avg;
    clrscr();
    printf("Enter total Numbers : ");
    scanf("%d", &n);
    for (i = 1; i <= n; i++)
    {
        printf("\nNumber %d : ", i );
        scanf("%f", &x);
        sum += x;
    }
    avg = sum / n;
    printf("\nThe Average is : %0.2f", avg);    
    getch();
}