Compilare: user.cpp: In function ‘void solve()’: user.cpp:62:15: warning: unused variable ‘h’ [-Wunused-variable] int i, j, h, x, allmx; ^ user.cpp:62:18: warning: unused variable ‘x’ [-Wunused-variable] int i, j, h, x, allmx; ^ user.cpp: In function ‘void readFile()’: user.cpp:39:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d\n", &n, &k); ^ user.cpp:44:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%c", &chr), a[i][j] = (chr - '0'); ^ user.cpp:46:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%c", &chr); ^