Clion doesn't print to console

Question

I am using printf("%d", 15); and nothing prints on the console.

I tried calling setvbuf (stdout, NULL, _IONBF, 0); first, nothing changed. Any ideas how to tackle this issue ?

Jacobi

Line buffering. printf("%d\n", 15); – Mastaba

Answer 1

printf buffers the output. It will not flush the buffer (i.e. actually write out the contents) until a newline is reached.

The best remedy is to use printf("%d\n", 15);. Alternatively you can flush the buffer using fflush(stdout);

You can suppress the buffering behaviour by writing setbuf(stdout, NULL); but I wouldn't recommend your interfering with the workings in that way.

Heeltap

Answer 2

Had same problem. This was solution for me when using Clion.

1. Use debug option when running program.

2. Use fflush(stdout).

printf("Test\n");
fflush(stdout);

After that you should see output in your debug console.

Acklin