Thread: strlen intermittent problem

1)Never use gets() for any reason. Use fgets() instead.
Cprogramming.com FAQ > Why gets() is bad / Buffer Overflows

2) You got your equation all mixed up and you are doing INTEGER arithmetic!
Think about it this way:
I am using strlen(a) + 1 .............. out of ..................... ARRAYSIZE
which is X................... out of....................... 100

What is X?

The problem is that math on integers only yields integers (whole numbers), and C rounds down. Since strlen(a) will always be less than ARRAYSIZE, dividing it by ARRAYSIZE will always yield zero.

You need to use floating point numbers, which can have decimal values:

Code:

int len = strlen(a);
printf("\nThis string occupies %d percent of it's array's capacity", 
        (int)((float)len/ARRAYSIZE * 100));

The red bits are casts; they tell the compiler to treat the variable as if it were a different type. By casting "len" to a float, we get a float back from the division. Multiplying a float will yield a float, so we then need to cast the result back to int.

You guys are still missing the extra 1 used by \0, but if you dont want to be purists, I don't blame you