Replace all ‘0’ with ‘5’ in an input Integer - GeeksQuiz

Replace all '0' with '5' in an input Integer - GeeksQuiz
Given a integer as a input and replace all the '0' with '5' in the integer.

The idea is simple, we get the last digit using mod operator ‘%’. If the digit is 0, we replace it with 5, otherwise keep it as it is. Then we recur for remaining digits.

// C program to replace all ‘0’ with ‘5’ in an input Integer #include<stdio.h>   // A recursive function to replace all 0s with 5s in an input number // It doesn't work if input number itself is 0. int convert0To5Rec(int num) {     // Base case for recursion termination     if (num == 0) //         return 0;       // Extraxt the last digit and change it if needed     int digit = num % 10;     if (digit == 0)         digit = 5;       // Convert remaining digits and append the last digit     return convert0To5Rec(num/10) * 10 + digit; }   // It handles 0 and calls convert0To5Rec() for other numbers int convert0To5(int num) {     if (num == 0)        return 5;     else return  convert0To5Rec(num); }

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