(1-100)using recursive function

#include<stdio.h>
int gen_num(int num);
int main()
{
    int n=1;
    gen_num(n);
    return 0;
}
int gen_num(int num)
{
    if(num<=100)
    {
        printf("%d\t",num);
        num+=1;
        gen_num(num);
    }
    return 0;
}