Compilare: main.c: In function 'main': main.c:48:25: warning: result of '2 << 31' requires 34 bits to represent, but 'int' only has 32 bits [-Wshift-overflow=] unsigned int a2_31 = (2<<31); ^~ main.c:48:15: warning: unused variable 'a2_31' [-Wunused-variable] unsigned int a2_31 = (2<<31); ^~~~~ main.c:47:26: warning: unused variable 'flag' [-Wunused-variable] unsigned int aux, aux2, flag; ^~~~ main.c:47:20: warning: unused variable 'aux2' [-Wunused-variable] unsigned int aux, aux2, flag; ^~~~ main.c:47:15: warning: unused variable 'aux' [-Wunused-variable] unsigned int aux, aux2, flag; ^~~ main.c:44:27: warning: unused variable 'treshold' [-Wunused-variable] int N, A, B, C, i, n, treshold; ^~~~~~~~ main.c:44:24: warning: unused variable 'n' [-Wunused-variable] int N, A, B, C, i, n, treshold; ^ main.c:50:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d %d",&N, &A, &B, &C); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~