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How to find the sum of an A.P. series in C

1 Answer

0 votes
#include <stdio.h>

int main()
{
	int first = 5, total = 10, diff = 4, sum;

    for (int i = first; i <= (first + (total - 1) * diff); i += diff) {
        printf("%d ", i);
    }
	sum = (total * (2 * first + (total - 1) * diff)) / 2;
    printf("\nsum = %d\n", sum);

    return 0;
}
  
  
/*
run:
  
5 9 13 17 21 25 29 33 37 41
sum = 230
  
*/

 





answered Feb 16, 2020 by avibootz

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