Compilare: main.c: In function 'main': main.c:90:11: warning: pointer targets in passing argument 1 of 'sscanf' differ in signedness [-Wpointer-sign] sscanf(c, "%u", &aux); ^ In file included from /usr/include/features.h:367:0, from /usr/include/stdio.h:27, from main.c:2: /usr/include/stdio.h:448:12: note: expected 'const char * restrict' but argument is of type 'unsigned char *' extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s, ^ main.c:96:16: warning: comparison between pointer and integer }while (!((c < '0') || (c > '9'))); ^ main.c:96:29: warning: comparison between pointer and integer }while (!((c < '0') || (c > '9'))); ^ main.c:74:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%u", &T); ^~~~~~~~~~~~~~~~~~~ main.c:96:11: warning: array subscript is below array bounds [-Warray-bounds] }while (!((c < '0') || (c > '9'))); ^~~~~~~~~~~~~~~~~~~~~~~~~