C program to find sum of n numbers:

#include <stdio.h>

int main()

{

     int num, sum = 0, count, i;

     printf("Please enter how many numbers you want to add\n");

     scanf("%d", &num);

     printf("Please enter %d numbers one by one\n",num);



     for (count = 1; count <= num; count++)

     {

         scanf("%d",&i);

         sum = sum + i;

     }

     printf("Sum of entered numbers = %d\n",sum);

     return 0;

}

#include <stdio.h>

int main()

{

int num, sum = 0, count, i;

printf("Please enter how many numbers you want to add\n");

scanf("%d", &num);

printf("Please enter %d numbers one by one\n",num);

for (count = 1; count <= num; count++)

{

scanf("%d",&i);

sum = sum + i;

}

printf("Sum of entered numbers = %d\n",sum);

return 0;

}

Output:

Please enter how many numbers you want to add

Please enter 3 numbers one by one

Sum of entered numbers = 70

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