Has been won't open the case, but in the dev can run normally, beg god to reassure

CodePudding user response:

 fprintf (stderr, "can 't open q1: % s \ n", the strerror (errno)); 

Replace with the

 printf (" can 't open q1!" ); 

Note with string. H and errno. H header file, or could have compile errors or warnings;

Can be seen through the strerror function q1 to open the cause of the failure;