C - fopen invalid file

Question

I am wondering, how to check if I am opening file which exists with fopen? I want to diplay some message, when user selects file with bad name. Is must be some simple checking, but I am not able to solve it.

Thanks

Answer 1

in your param list:

FILE pFile ;

then:

  pFile = fopen ("myfile.txt","r");

if (pFile == NULL)
printf("No Such File !! ");

Answer 2

When fopen fails, it returns NULL and sets errno to indicate the type of error.

Check the return value, and if it's NULL check errno. You can use functions like perror or strerror to display simple messages about those errors.