This is a simple program to find Length of a String in C++.

Just traverse the string till NULL (‘’), increment the ‘i’ likewise.

Program to Find length of a String C++

#include<iostream>
using namespace std;

int main( )
{
    int i;
    char str[80];
    cout<<"Enter a string:";
    gets(str);

    for(i=0;str[i]!='';i++);

    cout<<"Lenght of string is :"<<i;

    return 0;
}

OUTPUT: