When We Need Recursion ?

When we don’t need any explicit stacks then we need recursion:

#include<stdio.h>
void decToBin(unsigned int n){
        if(n==1)
        {
            printf("1");
            return;
        }
        decToBin(n/2);
        printf("%d",n%2);  //printing directly from buillt in stack
}
int main(){

decToBin(10);



return 0;
}