Compilare: user.c: In function ‘main’: user.c:24: warning: format ‘%ld’ expects type ‘long int’, but argument 3 has type ‘int’ user.c:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:29: warning: control reaches end of non-void function user.c:17: warning: ‘m’ may be used uninitialized in this function