Using scanf in VS Code with the Code Runner extension

Question

I tried a very simple code of C language using scanf, and it falls into the infinite loop(or it looks like). the code is the following:

#include <stdio.h>

int main(){
    int input = 0;
    scanf("%d", &input);
    return 0;
}

I used the code runner extension. Here is the screenshot just in case. enter image description here

Does anyone know how to fix it?

The `scanf` will wait for some terminal input followed by ENTER — Support Ukraine, Jan 11 '21 at 07:34
In other words - type something like: 42 in the terminal window and the program will end. — Support Ukraine, Jan 11 '21 at 07:41

Rex Wang · Answer 1 · 2022-03-24T12:31:24.417

5

I just came across the same problem. In my case, just search "code-runner.run" in the setting and check the box as follow.

Code-runner: Run In Terminal
[] whether to run code in integrated terminal.

Image instruction: screenshot

edited Mar 24 '22 at 12:31

answered Jan 08 '22 at 09:02

Rex Wang

51
1
4

Welcome to Stackoverflow. Kindly frame the answer in a way its understandable to the other users. You can add images in a stackoverflow answer. – Aditya Patnaik Jan 08 '22 at 14:25

score 0 · Answer 2 · answered Jan 11 '21 at 07:56

0

You can add some code to make a better appearance for users, for example:

#include <stdio.h>

int main(){
    int input = 0;
    printf("Please type in something:");
    scanf("%d", &input);
    return 0;
}

In this case you can know that the code is working and it gives you some feedback. Then you can type in the value which will be taken as input before the main function returns.

answered Jan 11 '21 at 07:56

zhangxaochen

32,744
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It still does not work... I tried and the printf function doesn't work either. – Sunwoo Jeong Jan 11 '21 at 21:43
How about the "HelloWorld" test? The code is fine, the compiler or the IDE setup might need to be checked, to see whether there's something wrong – zhangxaochen Jan 14 '21 at 01:29

score 0 · Answer 3 · answered Feb 02 '23 at 18:36

I had this same problem when I installed Mingw-64 and VS Code. I installed Ming from Sourceforge. When I went back and reviewed the directions for VSC, I noticed they recommended I download from MSYS2. So I removed the original installation and re-installed from MSYS2. All my problems with scanf went away. So my advice is to follow the installation instructions from the VSC website. https://code.visualstudio.com/docs/cpp/config-mingw

Using scanf in VS Code with the Code Runner extension

3 Answers3