Replace any space ' ' with '_' in 2-character string passCode. Sample output for the given program:

#include <iostream>

#include <string>

#include <cctype>

using namespace std;

int main() {

string passCode;

passCode = "1 ";

/ Your solution goes here /

cout << passCode << endl;

return 0;

}

The answer is :

for(unsigned int i = 0; i < passCode.length(); i++){

if(isspace(passCode.at(i))){

passCode.at(i) = '_';

}

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