#int main

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C Program to Find Product of 2 Numbers without using Recursion

#include <stdio.h> int product(int, int); int main() int a, b, result; printf("Enter two numbers to find their product: "); scanf("%d%d", &a, &b); result = product(a, b); printf("Product of %d and %d is %d\n", a, b, result); return 0; int product(int a, int b) int temp = 0; while (b != 0) temp += a; b--; return temp;

Output

Enter two numbers to find their product: 89 458 Product of 89 and 458 is 40762

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C Program to Convert a Number Decimal System to Binary System using Recursion

#include <stdio.h> int convert(int); int main() int dec, bin; printf("Enter a decimal number: "); scanf("%d", &dec); bin = convert(dec); printf("The binary equivalent of %d is %d.\n", dec, bin); return 0; int convert(int dec) if (dec == 0) return 0; else return (dec % 2 + 10 * convert(dec / 2));

Output

Enter a decimal number: 10 The binary equivalent of 10 is 1010 .

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C Program to Convert a Number Decimal System to Binary System using Recursion

#include <stdio.h> int convert(int); int main() int dec, bin; printf("Enter a decimal number: "); scanf("%d", &dec); bin = convert(dec); printf("The binary equivalent of %d is %d.\n", dec, bin); return 0; int convert(int dec) if (dec == 0) return 0; else return (dec % 2 + 10 * convert(dec / 2));

Output

Enter a decimal number: 10 The binary equivalent of 10 is 1010.