In this C program, we will calculate the sum of all odd numbers between 1 to 100 using for loop.

#### Required Knowledge

## C program to find sum of all odd numbers between 1 to N using for loop

#include <stdio.h> int main() { int counter, N, sum = 0; printf("Enter a Positive Number\n"); scanf("%d", &N); for(counter = 1; counter <= N; counter++) { /* Odd numbers are not divisible by 2 */ if(counter%2 == 1) { /* counter is odd, add it to sum */ sum = sum + counter; } } printf("Sum of Odd numbers from 1 to %d is %d", N, sum); return 0; }Output

Enter a Positive Number 9 Sum of Odd numbers from 1 to 9 is 25

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