Compilare: user.c: In function ‘swap’: user.c:99: warning: initialization makes integer from pointer without a cast user.c:101: warning: assignment makes pointer from integer without a cast user.c: At top level: user.c:121: warning: return type of ‘main’ is not ‘int’ user.c: In function ‘main’: user.c:137: warning: unused variable ‘aux’ user.c:139: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:142: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:125: warning: ‘q’ may be used uninitialized in this function