Compilare: user.cpp: In function ‘int a()’: user.cpp:60:9: warning: unused variable ‘vrg’ [-Wunused-variable] int vrg=0; ^ user.cpp: In function ‘int main()’: user.cpp:99:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.in" , "r" , stdin); ^ user.cpp:100:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.out", "w" , stdout); ^ user.cpp:102:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(ch,260,stdin); ^ user.cpp:106:28: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(cf,260,stdin); ^ user.cpp:120:28: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(cf,260,stdin); ^