While loop comparisons of strings/characters with fgets

Question

I am trying to get user input with fgets in C and am having trouble using the while loop.

Here is the code I am using:

char input[300];

fgets(input, 300, stdin);

while(strcmp("Quit", input) != 0) {

    fgets(input, 300, stdin);

}

When I enter Quit the loop continues and does not terminate and I don't understand why this is so.

And the duplicate is itself a duplicate of [`strcmp()` on a line read with `fgets()`](http://stackoverflow.com/questions/2404794). — Jonathan Leffler, Sep 18 '15 at 02:23

score 1 · Answer 1 · answered Sep 18 '15 at 02:15

1

fgets() stores the new line character in input as well. Either remove it manually, or compare like this:

while(strcmp("Quit\n", input) != 0)

answered Sep 18 '15 at 02:15

Yu Hao

How does one remove the newline character? – code Sep 18 '15 at 02:17
Is that similar to the EOL? – code Sep 18 '15 at 02:18
@code Something like `input[strlen(input) - 1] = '\0';`. – Yu Hao Sep 18 '15 at 02:20

1 Answers1