Compilare: user.cpp: In function ‘int main()’: user.cpp:26:15: warning: unused variable ‘p’ [-Wunused-variable] int n,i,j,p,dr=0,m=0; ^ user.cpp:26:22: warning: unused variable ‘m’ [-Wunused-variable] int n,i,j,p,dr=0,m=0; ^ user.cpp:24:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("comisia.in","r",stdin); ^ user.cpp:25:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("comisia.out","w",stdout); ^ user.cpp:30:43: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(si+1,nmax*20,sizeof(char),stdin); ^