im reading user input and if it's "y" go through the if
but it doesn't go through the if if i enter y
can someone tell me whats the issue?

i recommend you learn how to debug.

char str3[20];

fgets(str3, 20, stdin);
print(str3);
int comparison = strcmp(str3, "y");
print(comparison)
if(strcmp(str3,"y")==0){
//do something
}

this doesnt help me if i dont know why im getting a non zero
i already know strcmp is not returning zero

This post was edited by bakalolo on Oct 4 2013 10:25pm

i'm no C expert, but your buffer size of 20 seems suspicious to me since you're comparing it to something with size 1. how do you determine how many characters you're reading in? either you're terminating after 20 characters or you're signaling fgets to terminate early somehow. try running strlen on the input and strlen of "y" and see what you get. i suspect you're telling fgets to stop after "y" by pressing the enter button, which might produce a newline character. so strlen(str3) = 2 from y\n (or possible 3 if y\r\n) instead of 1 that you expect.

but if strlen(str3) is 1 and strlen("y") is 1 and printing them both out look the same, then print out the ascii/unicode/binary. keep debugging until you're 100% sure they're the same. if it comes to that point, see if maybe there's another comparison function to use. and if you're still not making progress, i'm out of ideas. then wait for someone else with more C experience to point out the problem.

/edit: and of course, try out strcmp("y", "y") and make sure that returns what you expect.

This post was edited by carteblanche on Oct 4 2013 11:03pm

buffer size should be fine as long as a newline character is added right after the input. Try setting the second character to the null character. Also print the input string and see what it looks like.

This post was edited by zackill4 on Oct 4 2013 11:27pm

yea that fixed it thnx

lol, kinda hacky but nice