Write a program to program to print 1 to N without any loop or goto statements ?

Question

Anonymous · Accepted Answer

use recursion.

#include 
#include 

int rec(int);

void main(){
        scanf(%d, &N);
        rec(N+1);
}

int rec(int N){
        if(N == 1)
                return 1;
        else
                printf("%d
", rec(N-1));
                return N;
}

Muhammed Irfan · Answer

#include
#include
 
int add(int num1, int num2);
 
int main() {
    int num1, num2, product = 0, i;
    printf ("Enter first number
");
    scanf("%d", &num1);
    printf("Enter second number
");
    scanf("%d", &num2);
     
    /* Add num1 to itself, num2 times */
    for (i = 0; i < num2; i++) {
        product = add(product, num1);
    }
 
    printf("Product of %d and %d is %d
", num1, num2, product);
     
 getch();
 return 0;
}
 
/* Add two numbers using bitwise operators */
int add(int num1, int num2) {
    int carry;
    while (num2 != 0) {
        carry = (num1 & num2) << 1;
        /* calculating the sum */
        num1 = num1 ^ num2;
        num2 = carry;
    }
    return num1;
}

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