Compilare: user.cpp: In function ‘int main()’: user.cpp:12:20: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[1000005]’ [-Wformat=] scanf("%s" , &s); ^ user.cpp:44:27: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(st[top] == '(' && st[top - 1] == '(' || st[top] == '{' && st[top - 1] == '{' || st[top] == '[' && st[top - 1] == '[') ^ user.cpp:44:107: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(st[top] == '(' && st[top - 1] == '(' || st[top] == '{' && st[top - 1] == '{' || st[top] == '[' && st[top - 1] == '[') ^ user.cpp:8:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paranteze.in" , "r" , stdin); ^ user.cpp:9:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paranteze.out" , "w" , stdout); ^ user.cpp:11:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n" , &n); ^ user.cpp:12:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s" , &s); ^