ispunct Function in C++

[AlphaOmegaStrife]

char punct(char a[], int len) {
for (int i = 0; i < len; i++) {
if (ispunct(a[i]))
{ return i; }
return -1;
}
}

Could anyone tell me why this function is only returning -1 for every string that I hand to it? I'm writing a program to take words from a .txt file and outputting them (with a little bit of alteration) into a different .txt file, and I need to remove punctuation from the strings. However, I cannot seem to detect where the punctuation is using the ispunct() function. I even wrote my own function using all of the cases of punctuation I could imagine and it still only returns -1. Is it a problem with the function here or the strings that I am giving to it? If showing more of my code is necessary, please let me know. Thanks!

[Albatross]

I couldn't help but notice that your return -1 statement is in your loop. That means your loop will only get to run once before your function returns. Is this what you intended?

-Albatross