Compilare: main.c: In function 'euclid': main.c:5:5: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if( y = 0) return x; ^~ main.c: In function 'main': main.c:19:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^~~~~~~~~~~~~~~~~~~~ main.c:21:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &a, &b); ^~~~~~~~~~~~~~~~~~~~~~~~~~