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Write a cpp program to substract two numbers taking input form user?

#include<iostream.h>

#include<conio.h>

void main()

{

 clrscr();

 int a, b;

 cout<<"Enter first number: ";

 cin>>a;

 cout<<"Enter second number: ";

 cin>>b;

 cout<<"Substraction of two numbers is: "<<a-b;

 getch();

}

Ourput:

/* For IDK Code Block */

#include<iostream>
#include<conio.h>
using namespace std;
main()
{
 int a, b;
 cout<<"Enter first number: ";
 cin>>a;
 cout<<"Enter second number: ";
 cin>>b;
 cout<<"Substraction of two numbers is: "<<a-b;
 getch();
}

Output:

Note:-

 In Code Block or some other idk clrscr() function gives error: 'clrscr' was not declared in this scope.