C++ Programming, Stack queue and deque

C++ Programming, Stack queue and deque
Improve the error code below, you can also create custom methods in the main class. See attached photo for the instructions.

main.cpp: In function ‘int main(int, char**)’: main.cpp:17:15: error: expected primary-expression before ‘char’ stack<char> s; ^~~~ main.cpp:21:17: error: ‘s’ was not declared in this scope s.push(x[i]); ^ main.cpp:22:37: error: ‘s’ was not declared in this scope else if (x[i]==')' and !s.empty()) ^ main.cpp:44:16: error: ‘s’ was not declared in this scope return (s.empty()); ^ main.cpp:47:14: error: jump to case label [-fpermissive] case 1: ^ main.cpp:16:16: note: crosses initialization of ‘std::__cxx11::string x’ string x=str; ^ main.cpp:56:14: error: jump to case label [-fpermissive] case 2: ^ main.cpp:16:16: note: crosses initialization of ‘std::__cxx11::string x’ string x=str; ^ main.cpp:74:14: error: jump to case label [-fpermissive] case 3: ^ main.cpp:16:16: note: crosses initialization of ‘std::__cxx11::string x’ string x=str; ^ main.cpp:90:14: error: jump to case label [-fpermissive] case 4: ^ main.cpp:16:16: note: crosses initialization of ‘std::__cxx11::string x’ string x=str; ^ main.cpp:110:14: error: jump to case label [-fpermissive] case 5: ^ main.cpp:16:16: note: crosses initialization of ‘std::__cxx11::string x’ string x=str; ^ main.cpp:130:14: error: jump to case label [-fpermissive] case 6: ^ main.cpp:16:16: note: crosses initialization of ‘std::__cxx11::string x’ string x=str; ^ g++: error: main.o: No such file or directory g++: fatal error: no input files compilation terminated.