Compilare: user.c: In function ‘swap’: user.c:9:7: warning: assignment makes integer from pointer without a cast [enabled by default] c = a; ^ user.c:11:7: warning: assignment makes pointer from integer without a cast [enabled by default] b = c; ^ user.c: In function ‘main’: user.c:35:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &t); ^ user.c:38:16: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &a, &b); ^