Need help with the program!!!

Question

1.00/5 (1 vote)

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Hello everyone! I'm the beginner in C. So i have the problem with the program to take two numbers and display the sum. Here is the code!

#include <stdio.h>
main()
{
      int a,b,sum;
      printf("\nType your frist number: ");
      scanf("%d" , &a);
      printf("\nType your second number: ");
      scanf("%d", &b);
      sum=a+b;
      printf("\n The sum of two number you have just type is %d", sum);
      printf("\nPress enter to continue");
}

I compile it successfully in Dev-C++. The problem is: when i run it and input 2 numbers. The program won't stop at the result line: "The sum of two number...." for me to view the result. It terminate immediately after that line show up.

I running Dev-C++ (version 4.9.9.2) on Windows 7 64bit.

Thank you very much and sorry for my bad English. (I'm from Vietnam, you know ^^)

Posted 7-Sep-12 2:00am

Minh Hikari

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2 solutions

Solution 2

There is no code that let the program stop anywhere after you have entered the two numbers.

If you want to let it run for another calculation, use a while loop until a specific condition is met (both numbers null here):

C++

main()
{
    int a,b,sum;
    do
    {
        printf("\nType your frist number: ");
        scanf("%d" , &a);
        printf("\nType your second number: ");
        scanf("%d", &b);
        sum=a+b;
        printf("\n The sum of two number you have just type is %d", sum);
        printf("\nEnter null for both numbers to terminate");
    }
    while (a != 0 || b != 0);
}

Posted 7-Sep-12 2:09am

Jochen Arndt

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**JF2015** · Accepted Answer · 2012-09-07T02:02:00

Solution 1

Just add
getch();
after the last printf.

Posted 7-Sep-12 2:02am

JF2015

Updated 7-Sep-12 2:07am

v3

Comments

Minh Hikari 7-Sep-12 8:19am

Thank you very much!!! And...uh....Can you explain more clearly about "getch();" for me!!!

JF2015 7-Sep-12 8:21am

Basically it just waits for you to press a key and therefore the program does not close. See here for some more information: http://www.programmingsimplified.com/c/conio.h/getch

Minh Hikari 7-Sep-12 8:25am

ok! Like "Press any key to continue..." :D..Thank you very much!!! :D

Mihai Vrinceanu 7-Sep-12 16:35pm

If you want to see "Press any key to continue...", add this line after printf:
system("pause");

Espen Harlinn 7-Sep-12 8:29am

5'ed!