Here is a simple program to make Calculator in C++
PROGRAM:
// C++ program to make calculator #include <cstdio> #include <cstdlib> #include <iostream> using namespace std; int main(int nNumberofArgs, char* pszArgs[]) { // enter operand1 op operand2 int nOperand1; int nOperand2; char cOperator; cout << "Enter 'value1 op value2'n" << "where op is +, -, *, / or %:" << endl; cin >> nOperand1 >> cOperator >> nOperand2; // echo what the operator entered cout << nOperand1 << " " << cOperator << " " << nOperand2 << " = "; // now calculate the result; remember that the // user might enter something unexpected switch (cOperator) { case '+': cout << nOperand1 + nOperand2; break; case '-': cout << nOperand1 - nOperand2; break; case '*': case 'x': case 'X': cout << nOperand1 * nOperand2; break; case '/': cout << nOperand1 / nOperand2; break; case '%': cout << nOperand1 % nOperand2; break; default: // didn't understand the operator cout << " is not understood"; } cout << endl; // wait until user is ready before terminating program // to allow the user to see the program results cout << "Press Enter to continue..." << endl; cin.ignore(10, 'n'); cin.get(); return 0; }