Compilare: user.c:5:6: warning: return type of ‘main’ is not ‘int’ [-Wmain] void main() ^ user.c: In function ‘main’: user.c:10:2: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘long int *’ [-Wformat=] fscanf(f, "%d%d", &a, &b); ^ user.c:10:2: warning: format ‘%d’ expects argument of type ‘int *’, but argument 4 has type ‘long int *’ [-Wformat=] user.c:19:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(g, "%d\n", rez); ^ user.c:10:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &a, &b); ^