Compilare: main.cpp: In function 'int main()': main.cpp:8:15: warning: unused variable 'j' [-Wunused-variable] int m,n,i,j; ^ main.cpp:5:35: 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:6:37: 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:9:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&sol); ^ main.cpp:11:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] {scanf("%d%d",&m,&n); ^