Variable Scope & Data Types in C++

 #include<iostream>

using namespace std;

int glo = 6;    //Global Variable

void sum()

{

    int a;

    cout<<glo;

}

int main()

{

    //We can make same name local and global variable but precedence will get local variable

    //local variable will get more importance as compare to global variable

    int glo=9;  //Local Variable

    glo=78;

    // int a = 4;

    // int b = 5;

    int a = 14, b = 15;

    float pi=3.14;

    char c = 'u';

    bool is_true = true;

    bool is_false = false;

    sum();

    cout<<glo<<is_true<<is_false;

    // cout<<"This is tutorial four.\nHere the value of a is "<<a<<"\nThe value of b is "<<b<<"\n";

    // cout<<"The value of pi is : "<<pi;

    // cout<<"\nThe value of c is : "<<c;

    return 0;

}

OUTPUT:

PS D:\C++> cd "d:\C++\" ; if ($?) { g++ tut4.cpp -o tut4 } ; if ($?) { .\tut4 } 67810 PS D:\C++>