Compilare: user.c: In function ‘read’: user.c:50:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n",&n,&m,&u); ^ user.c:53:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&x,&y); ^ user.c: In function ‘turisti’: user.c:63:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&t); ^ user.c:66:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d\n",&x1,&y1,&x2,&y2); ^ user.c: In function ‘localnici’: user.c:80:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&l); ^ user.c:83:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d\n",&x1,&y1,&x2,&y2); ^ user.c: In function ‘main’: user.c:96:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(infile,"r",stdin); ^ user.c:97:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(outfile,"w",stdout); ^