Compilare: user.cpp: In function ‘void rezolva2()’: user.cpp:70:10: warning: unused variable ‘ln’ [-Wunused-variable] long ln,x=n-d/2,val1,val2; ^ user.cpp:70:13: warning: unused variable ‘x’ [-Wunused-variable] long ln,x=n-d/2,val1,val2; ^ user.cpp: In function ‘int main()’: user.cpp:111:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("intrus.in","r",stdin); ^ user.cpp:113:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&p); ^ user.cpp:114:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld%ld",&n,&m,&d); ^ user.cpp:118:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&mat[i][j]); ^