# C Program to Find Sum of All Odd Numbers Between 1 to N using For Loop

• Write a C program to find sum of all odd numbers between 1 to N using for loop.
• Wap in C to print sum of all odd numbers between 1 to 100 using for loop.

Required Knowledge

• C printf and scanf functions
• For loop in C

## 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;
/*
* Take a positive number as input form user
*/
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 all Odd numbers between 1 to %d is %d", N, sum);

return 0;
}

Output:

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