C++ Program to Replace all 0’s with 1 in a given integer
Program to Replace all 0’s with 1 in a given integer
Here we will discuss how to replace all the 0’s with 1 in a given integer using C++ programming language.
The concept is simple, find the digits of the integer. Compare each digit with 0 if the digit is equal to 0 then replace it with 1. Construct the new integer with the replaced digits.
The program for Implement a C Program to replace all 0’s with 1 in a given integer as an input, all the 0’s in the number has to be replaced with 1.
Question can come like Way 1
Write a code to change all zero's as one's (0s as 1s) in a given number? ex: 120014 needs to be printed as 121114
Question can come like Way 2
implement a c program to replace all 0's with 1 in a given integer as an input, all the 0's in the number has to be replaced with 1.
Algorithm
- Take Input in num and initialize a variable num with with value 0
- If num is equals to zero then update the value of num2 to 1
- Iterate using a while loop until num is greater then 0
- For each iteration initialize a variable rem and store unit digit of num
- If rem equals to 0 then set rem to 1
- Set num to num divide by 10 & num2 equals to num2*10+rem
- Reverse and print num2
C++ code
Run
#include<bits/stdc++.h>
using namespace std;
//main program
int main()
{
int num,num2=0;
cout<<"Enter number: "; //user input cin>>num;
//checking for 0 input
if(num == 0)
num2=1;
//converting 0 to 1
while(num>0)
{
int rem = num%10;
if(rem == 0)
rem = 1;
num = num/10;
num2=num2*10+rem;
}
num = 0 ; // Store the reverse of num2
while(num2>0){
int r = num2%10;
num= num*10 + r;
num2 /= 10;
}
//converted number
cout<<"Converted number is: "<<num;
return 0;
}
Output
Enter number: 12090 Converted number is: 12191
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long long int zeroTo1(long long int num){
if(num == 0) return 1;
int flag = 1;
if(num < 0) {
num *= -1;
flag = -1;
}
long long int res = 0, base = 1;
while(num != 0){
res += ((num % 10) == 0 ? 1 : (num % 10)) * base;
base *= 10;
num /= 10;
}
return res * flag;
}