2/24/00: Exercise 3 Cheat Sheet
-------------------------------


/*********************************************************
 helloC.c 

 Type in the following program into a file called 
 helloC.c.

 To compile and run type the following commands.
 $ gcc helloC.c -o helloC
 $ ./helloC
*********************************************************/
#include <stdio.h>

void main()
{
    int num1, num2;

    printf("Hello World!\n");
    printf("Enter a number and press return: ");
    scanf("%d",&num1);
    printf("Enter another number and press return: ");
    scanf("%d",&num2);

    printf("Result: %d + %d = %d\n", num1, num2, num1+num2);

}

//////////////////////////////////////////////////
// helloC++.cc
//
// Type in the following program into a file called 
// helloC++.cc.
//
// To compile and run type the following commands.
// $ g++ helloC++.cc -o helloC++
// $ ./helloC++
//////////////////////////////////////////////////
#include <iostream.h>

void main()
{
        int num1, num2;

        cout << "Hello World!" << endl;

        cout << "Enter a number and press return: ";
        cin >> num1;
        cout << "Enter another number and press return: ";
        cin >> num2;

        cout << "Result: " << num1 << " + " << num2 << " = ";
        cout << num1 + num2 << endl;
}



##################################################
# helloPy.py
#
# Type in the following program into a file called 
# helloPy.py.
#
# To run type the following commands.
# $ python helloPy.py
##################################################
import sys;

print "Hello World!";
print "Enter a number and press return:  ";
num1 = sys.stdin.readline();
num1 = int(num1)
print "Enter another number and press return:  ";
num2 = sys.stdin.readline();
num2 = int(num2)
print num1, "+", num2, " = ", num1 + num2

##################################################
# hellosh
#
# Type in the following program into a file called 
# hellosh
#
# To run type the following commands.
# $ csh hellosh
##################################################
echo Hello World!
echo Enter a number and press return:  
set num1 = $<
echo Enter another number and press return:
set num2 = $<
echo $num1 + $num2 = `expr $num1 + $num2`