Compilare: main.cpp:37:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main(){ ^ main.cpp: In function 'void citire()': main.cpp:13:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trib.in","r",stdin); ^ main.cpp:14:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ main.cpp:16:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,&b); ^ main.cpp: In function 'int main()': main.cpp:43:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trib.out","w",stdout); ^