Problem 1

#include<stdio.h>
int printNum(int);
int main()
{
    int a;
    printf("Enter a number: ");
    scanf("%d",&a);
    printNum(a);
    return 0;
}
int printNum(int x)
{
    if(x<1)
    {
        return;
    }
    else
    {
        printNum(x-1);
        printf("%d\n",x);
    }
    return (x);
}