Compilare: user.cpp: In function ‘int main()’: user.cpp:14:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d%d%d" , &m , &n , &p); ^ user.cpp:22:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d", &x); ^ user.cpp:44:9: warning: ‘cnt’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(n/2+1<=cnt) cont++; ^