Compilare: main.c: In function 'main': main.c:13:12: warning: passing argument 1 of 'fscanf' from incompatible pointer type [-Wincompatible-pointer-types] fscanf("%u%u", &a,&b); ^~~~~~ In file included from /usr/include/features.h:367:0, from /usr/include/stdio.h:27, from main.c:1: /usr/include/stdio.h:443:12: note: expected 'FILE * restrict {aka struct _IO_FILE * restrict}' but argument is of type 'char *' extern int __REDIRECT (fscanf, (FILE *__restrict __stream, ^ main.c:13:20: warning: passing argument 2 of 'fscanf' from incompatible pointer type [-Wincompatible-pointer-types] fscanf("%u%u", &a,&b); ^ In file included from /usr/include/features.h:367:0, from /usr/include/stdio.h:27, from main.c:1: /usr/include/stdio.h:443:12: note: expected 'const char * restrict' but argument is of type 'unsigned int *' extern int __REDIRECT (fscanf, (FILE *__restrict __stream, ^ main.c:13:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf("%u%u", &a,&b); ^~~~~~~~~~~~~~~~~~~~~