Compilare: user.cpp: In function ‘void solve()’: user.cpp:190:32: warning: statement has no effect [-Wunused-value] ok == false; ^ user.cpp:195:33: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(ok = true) ^ user.cpp: In function ‘void citire()’: user.cpp:256:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &m); ^ user.cpp:260:35: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(expresie, 60, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:272:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresii.in", "r", stdin); ^ user.cpp:273:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresii.out", "w", stdout); ^