Compilare: user.c: In function ‘cueri’: user.c:32:9: warning: ‘return’ with no value, in function returning non-void [enabled by default] return; ^ user.c: In function ‘main’: user.c:52:34: warning: unused variable ‘j’ [-Wunused-variable] int v[MAX], arb[4 * MAX], i, j, x, n, m, mod, y; ^ user.c:57:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.c:59:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ user.c:65:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&mod,&x,&y); ^