Compilare: main.c: In function 'euclid': main.c:4:6: warning: unused variable 'c' [-Wunused-variable] int c = 0; ^ main.c: In function 'main': main.c:35:2: warning: statement with no effect [-Wunused-value] for (i; i < n; ++i) ^~~ main.c:32:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^~~~~~~~~~~~~~~~~~~ main.c:39:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d", &a, &b); ^~~~~~~~~~~~~~~~~~~~~~~~~