Compilare: user.c: In function ‘main’: user.c:30:21: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ( a == 2 && b == 1 || a == 5 && b == 3 || a == 7 && b == 4 ) ^ user.c:30:61: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ( a == 2 && b == 1 || a == 5 && b == 3 || a == 7 && b == 4 ) ^ user.c:18:24: warning: unused variable ‘c’ [-Wunused-variable] int t, i, a, b, d, c; ^ user.c:18:21: warning: unused variable ‘d’ [-Wunused-variable] int t, i, a, b, d, c; ^ user.c:20:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &t ); ^ user.c:23:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &a, &b ); ^