Program to reverse, copy, calculate length of the string using function.

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
void string_reverse(char[],int&);
void string_length(char[],int&);
void string_copy(char[],char[]);

char str[20],str1[20];
int l=0,a=0;

string_reverse(str,l);
string_length(str,a);
string_copy(str,str1);
return 0;
}
void string_reverse(char str[20],int&l)
{
cout<<"\nREVERSE OF THE STRING";
cout<<"\n\nEnter any String of Characters:";
cin>>str;
for(int i=0;str[i]!='\0';i++)
l++;
cout<<"\nReverse of the String is:";
for(int i=l-1;str[i]!='\0';i--)
cout<<str[i];

}

void string_length(char str[20],int&a)

{

cout<<"\n\nLENGTH OF THE STRING";
cout<<"\n\nEnter any String of Characters:";
cin>>str;
cout<<"\nLength of the String is:";
for(int i=0;str[i]!='\0';i++)
a++;

cout<<a;
}
void string_copy(char str[20],char str1[20])
{
cout<<"\n\nCOPY OF THE STRING";
cout<<"\n\nEnter any String of Characters:";
cin>>str;
cout<<"\nThe copy of the original string is:";
for(int i=0;str[i]!='\0';i++)
{
str1[i]=str[i];
cout<<str1[i];
}
}


By Ayush Gupta, Student