Compilare: user.c: In function ‘main’: user.c:18: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.c:17: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:26: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:9: warning: ‘start’ may be used uninitialized in this function user.c:9: warning: ‘end’ may be used uninitialized in this function