Compilare: user.c: In function ‘bin’: user.c:17: warning: implicit declaration of function ‘changemat’ user.c:18: warning: implicit declaration of function ‘suma’ user.c:20: warning: implicit declaration of function ‘restoremat’ user.c:22: warning: implicit declaration of function ‘changemat2’ user.c:27: warning: implicit declaration of function ‘changemat3’ user.c: At top level: user.c:39: warning: conflicting types for ‘changemat’ user.c:17: note: previous implicit declaration of ‘changemat’ was here user.c: In function ‘changemat’: user.c:44: warning: implicit declaration of function ‘rind’ user.c:45: warning: implicit declaration of function ‘coloana’ user.c: At top level: user.c:49: warning: conflicting types for ‘changemat2’ user.c:22: note: previous implicit declaration of ‘changemat2’ was here user.c:59: warning: conflicting types for ‘changemat3’ user.c:27: note: previous implicit declaration of ‘changemat3’ was here user.c:78: warning: conflicting types for ‘restoremat’ user.c:20: note: previous implicit declaration of ‘restoremat’ was here user.c: In function ‘cit’: user.c:90: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:94: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c: At top level: user.c:111: warning: conflicting types for ‘rind’ user.c:44: note: previous implicit declaration of ‘rind’ was here user.c:120: warning: conflicting types for ‘coloana’ user.c:45: note: previous implicit declaration of ‘coloana’ was here user.c: In function ‘main’: user.c:149: warning: unused variable ‘j’ user.c:149: warning: unused variable ‘i’