ISO C mandates that fgetc() returns an int since it must be able to return every possible character in addition to an end-of-file indicator. So code that places the return value into a char, and uses it to detect EOF, is generally plain wrong and should not be used. Having said that, two of the … Read more
The golden rule for writing this line is while ((ch = fgetc(stdin)) != EOF) ch should be int .Your cute trick of making ch unsigned fails because EOF is a signed int quantity. Ok, let’s now go into the depth…… Step 1: ch=fgetc(fp) fgetc() returns -1 (a signed int). By the golden rules of C … Read more
You can’t cast the return value to char because the return value could be EOF, and EOF value is system-dependent and is unequal to any valid character code. link Usually it is -1 but you should not assume that. Check this great answer from the c-faq-site: Two failure modes are possible if, as in the … Read more
This program reads from the file and converts the tokens to floats. You should read an entire line and tokenize it. Then you just need to create an array and add to the array at the right place in the code. #include <stdio.h> #include <stdlib.h> #include <memory.h> int main(void) { FILE *sp1; char line[256]; double … Read more