Compilare: main.cpp: In function 'int main()': main.cpp:14:84: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'char*' [-Wformat=] freopen("euclid3.in","r",stdin),freopen("euclid3.out","w",stdout),scanf("%d",&t); ^ main.cpp:14:85: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euclid3.in","r",stdin),freopen("euclid3.out","w",stdout),scanf("%d",&t); ^ main.cpp:14:85: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:14:85: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:16:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&a,&b,&c),d=W(a,b,x,y); ^