C++ functions

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cctype>
using namespace std;

void  chane(string *x){

    x[0] = '1';
}


int main() {

    string name = "apel";

    chane(&name);

    cout<<name;

//find locaation

int loc = name.find("x");

//substring
string name2 = name.substr(0,2);

int len = name.size();


/*input full string*/
/*getline(cin,name);

name +="xxzzxxxx";
cout<<name;*/


/*string compare*/

//cout<< name.compare("Apel");


//name.clear();


/*Character array*/


/*
int x[100] = {1,2,33,3,4};

char  a[100],b[100],c[100];

cin>>a;
cout<<a<<endl;

    cin>>b;
    cout<<b<<endl;
    cin>>c;
    cout<<c<<endl;
*/

/*
char d[100],e[100];

cin>>d;

int i=0;
while(d[i] !='\0'){

    cout<<d[i];
    e[i] = d[i];
    i++;
}
cout<<endl;

e[i] = '\0';

i =0;
    while(e[i] !='\0'){

        cout<<e[i];
        i++;
    }

*/













/*
string name3,name4,name5;

cin>>name3;
cout<<name3<<endl;

cin>>name4;
cout<<name4<<endl;

cin>>name5;
cout<<name5<<endl;
*/














    return 0;
}