C Programming Code Examples
C > Recursion Code Examples
Find the Sum of Natural Numbers using Recursion
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/* Find the Sum of Natural Numbers using Recursion
The positive numbers 1, 2, 3... are known as natural numbers. The program below takes a positive integer from the user and calculates the sum up to the given number. */
#include <stdio.h>
int addNumbers(int n);
int main()
{
int j;
printf("Enter a positive integer: ");
scanf("%d", &j);
printf("Sum = %d",addNumbers(j));
return 0;
}
int addNumbers(int n)
{
if(n != 0)
return n + addNumbers(n-1);
else
return n;
}
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