Write a program that Read a Number and Square in C++

This program read a number and print its Square

Source Code:

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#include <iostream.h> #include <conio.h> using namespace std; // Prototype Declarations int getNum (void); int sqr (int x); void printOne (int x); int main() { // Get a number and square it int a = getNum (); // Square the number just read int b = sqr (a); // Now print it printOne (b); // Done. Return to operating system. return 0; }//main /* ============= getNum =============== Read number from keyboard and return it. Pre nothing Post number read and returned */ int getNum (void) { cout << " Enter a number to be a squared: "; int numIn; cin >> numIn; return numIn; } //getNum /* =============== sqr ==================== Return the square of the parameter. Pre x contains number to be squared Post squared value returned */ int sqr (int x) { return (x * x); }// sqr /* ============= printOne ================= print one integer value Pre x contains number to be printed Post squared value printed. */ void printOne (int x) { cout << " The value is: " << x << endl; getch(); return; } // printOne

OutPut:

 Enter a number to be a squared: 76
 The value is: 5776