View Code of Problem 52

#include <iostream>
#include <cstdio>
using namespace std;
int main(){
    char str[150];
    cin.getline(str,150);
    for(int i=strlen(str);i>=0;i--){
        cout<<str[i];
    }
    
    
    return 0;
}
/*
Main.cc: In function 'int main()':
Main.cc:7:25: error: 'strlen' was not declared in this scope
     for(int i=strlen(str);i>=0;i--){
                         ^
*/

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