Question

Write a c++program for calculator with addition,sub

Answer 1

Answer:

# include <iostream>

using namespace std;

int main()

{

char op;

float num1, num2;

cout << "Enter operator either + or - or : ";

cin >> op;

cout << "Enter two operands: ";

cin >> num1 >> num2;

switch(op)

{

case '+':

cout << num1+num2;

break;

case '-':

cout << num1-num2;

break;

default:

// If the operator is other than +, - error message is shown

cout << "Error! operator is not correct";

break;

}

return 0;

}

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Answer 2

Answer:

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int a, b,c;

cout<<"\nEnter any number";

cin>>a;

cout<<"\nEnter another number";

cin>>b;

cout<<"\nPress 1 for addition";

cout<<"\nPress 2 for subtraction";

cout<<"\nEnter your choice";

cin>>c;

switch(c)

{

case 1:cout<<a+b;

break;

case 2:cout<<a-b;

break;

default:cout<<"Wrong choice! ";

}

getch();

}