Answer to Question #158131 in C for Farjana Islam

Question

Write a program to evalute the series.

1+3+5+7+........+n

Answer 1

#include <stdio.h>
int main() {
    // we must calculte 1 + 3 + 5 + .... + n
    // n is odd
    int n, Sum = 0;
    printf("n = ");
    scanf("%d", &n);
    if (n % 2 == 1) {
        for (int i = 1; i <= n; i += 2) {
            Sum += i;
        }
    }
    else {
        printf("Enter only odd number.");
    }
    printf("The value of 1 + 3 + 5 + ... + %d = %d", n, Sum);
    return 0;
}