Compilare: main.cpp: In function 'int main()': main.cpp:28:17: warning: unused variable 'j' [-Wunused-variable] int n,x,y,i,j,sol=1; ^ main.cpp:28:19: warning: unused variable 'sol' [-Wunused-variable] int n,x,y,i,j,sol=1; ^~~ main.cpp:26:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("divmul.in","r",stdin); ^ main.cpp:27:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("divmul.out","w",stdout); ^ main.cpp:29:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:31:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^