Compilare: user.cpp: In function ‘int lee()’: user.cpp:25:19: warning: unused variable ‘i’ [-Wunused-variable] int ln=1,cn=1,i,inc=1,minim; ^ user.cpp:25:27: warning: unused variable ‘minim’ [-Wunused-variable] int ln=1,cn=1,i,inc=1,minim; ^ user.cpp:28:9: warning: unused variable ‘s’ [-Wunused-variable] int s; ^ user.cpp: In function ‘void citire()’: user.cpp:15:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drum6.in","r",stdin); ^ user.cpp:16:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ",&n,&m); ^ user.cpp:19:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&ma[i][j]); ^ user.cpp:20:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^