내 코드에서 문자열을 사용하는 방법

Question

내 코드를 수정하려고 시도했지만 원활하게 실행되지만 U, C, K, N, O와 같이 요소의 첫 번째 문자 만 읽습니다. 문제없이 잘 돌아갑니다.

Fe, Cl, Uuu, Pd, Rh.를 입력하려고 할 때. 첫 번째 글자 만 읽고 잘못된 답을줍니다.

그래서 아무 문제가 없으므로 아무 문제없이 모든 요소를 ​​읽습니다. 스위치 케이스가 std::string을 처리하지 않는

#include <iostream> 
#include <Windows.h> 


int main() 

{ 

    using namespace std; 


    char Index; 

    cout<<"please type an Element to see its Atomic number"<<endl; 


    cin>>Index; 

    switch (Index) 
    { 

      case 'H': 

      cout<<"tAtomic Number is 2"<<endl; 

      break; 

      case 'Li': 

       cout<<"The full name is (Lithium) , The Atomic number is 3"<<endl; 

       break; 

       case 'Ac': 

       cout<<"The full name is (Actinium)The Atomic number is 89"<<endl; 

       break;   


       case 'Al': 

       cout<<"The full name is (Aluminum)The Atomic number is 13"<<endl; 

       break; 

       case 'Am': 

       cout<<"The full name is (Americium)The Atomic number is 95"<<endl; 


       break; 

       case 'Sb': 

       cout<<"The full name is (Antimony)The Atomic number is 51"<<endl; 

       break; 

       case 'Ar': 

       cout<<"The full name is (Argon)The Atomic number is 18"<<endl; 

       break; 

       case 'As': 

       cout<<"The full name is (Arsenic)The Atomic number is 33"<<endl; 

       break; 

       case 'At': 

       cout<<"The full name is (Astatine)The Atomic number is 85"<<endl; 

       break; 

       case 'Ba': 

       cout<<"The full name is (Barium)The Atomic number is 56"<<endl; 

       break; 

       case 'Bk': 

       cout<<"The full name is (Berkelium)The Atomic number is 97"<<endl; 

       break; 

       case 'Be': 

       cout<<"The full name is (Beryllium)The Atomic number is 4"<<endl; 

       break; 

       case 'Bi': 

       cout<<"The full name is (Bismuth)The Atomic number is 83"<<endl; 

       break; 

       case 'Bh': 

       cout<<"The full name is (Bohrium) The Atomic number is 107"<<endl; 

       break; 

       case 'B': 

       cout<<"The full name is (Boron)The Atomic number is 5"<<endl; 

       break; 

       case 'Br': 

       cout<<"The full name is (Bromine)The Atomic number is 35"<<endl; 

       break; 

       case 'Cd': 

       cout<<"The full name is (Cadmium )The Atomic number is 48"<<endl; 

       break; 

       case 'Ca': 


       cout<<"The full name is (Calcium)The Atomic number is 20"<<endl; 

       break; 

       case 'Cf': 

       cout<<"The full name is (Californium)The Atomic number is 98"<<endl; 

       break; 

       case 'C': 

       cout<<"The full name is (Carbon)The Atomic number is 6"<<endl; 

       break; 

       case 'Ce': 

       cout<<"The full name is (Cerium)The Atomic number is 58"<<endl; 

       break; 

       case 'Cs': 

       cout<<"The full name is (Cesium)The Atomic number is 55"<<endl; 

       break; 

       case 'Cl': 

       cout<<"The full name is (Chlorine)The Atomic number is 17"<<endl; 

       break; 


       case 'Cr': 

       cout<<"The full name is (Chromium)The Atomic number is 24"<<endl; 

       break; 

       case 'Co': 

       cout<<"The full name is (Cobalt)The Atomic number is 27"<<endl; 

       break; 

       case 'Cu': 

       cout<<"The full name is (Copper)The Atomic number is 29"<<endl; 

       break; 

       case 'Cm': 

       cout<<"The full name is (Curium)The Atomic number is 96"<<endl; 

       break; 

       case 'Ds': 

       cout<<"The full name is (Darmstadtium)The Atomic number is 110"<<endl; 

       break; 

       case 'Db': 

       cout<<"The full name is (Dubnium)The Atomic number is 105"<<endl; 

       break; 

       case 'Dy': 

       cout<<"The full name is (Dysprosium)The Atomic number is 66"<<endl; 

       break; 

       case 'Es': 

       cout<<"The full name is (Einsteinium)The Atomic number is 99"<<endl; 

       break; 

       case 'Er': 

       cout<<"The full name is (Erbium)The Atomic number is 68"<<endl; 

       break; 

       case 'Eu': 

       cout<<"The full name is (Europium)The Atomic number is 63"<<endl; 


       break; 


       case 'Fm': 

       cout<<"The full name is (Fermium)The Atomic number is 100"<<endl; 

       break; 

       case 'F': 

       cout<<"The full name is (Fluorine)The Atomic number is 9"<<endl; 

       break; 

       case 'Fr': 

       cout<<"The full name is (Francium)The Atomic number is 87"<<endl; 

       break; 

       case 'Gd': 

       cout<<"The full name is (Gadolinium)The Atomic number is 64"<<endl; 

       break; 

       case 'Ga': 

       cout<<"The full name is (Gallium )The Atomic number is 31"<<endl; 

       break; 

       case 'Ge': 

       cout<<"The full name is (Germanium)The Atomic number is 32"<<endl; 

       break; 

       case 'Au': 

       cout<<"The full name is (Gold)The Atomic number is 79"<<endl; 

       break; 

       case 'Hf': 

       cout<<"The full name is (Hafnium)The Atomic number is 72"<<endl; 

       break; 

       case 'Hs': 

       cout<<"The full name is (Hassium)The Atomic number is 108"<<endl; 

       break; 

       case 'He': 

       cout<<"The full name is (Helium)The Atomic number is 2"<<endl; 

       break; 

       case 'Ho': 

       cout<<"The full name is (Holmium )The Atomic number is 67"<<endl; 

       break; 

       case 'In': 

       cout<<"The full name is (Indium)The Atomic number is 49"<<endl; 

       break; 

       case 'I': 

       cout<<"The full name is (Iodine)The Atomic number is 53"<<endl; 

       break; 

       case 'Ir': 

       cout<<"The full name is (Iridium )The Atomic number is 77"<<endl; 

       break; 

       case 'Fe': 

       cout<<"The full name is (Iron)The Atomic number is 26"<<endl; 

       break; 

       case 'Kr': 

       cout<<"The full name is (Krypton)The Atomic number is 36"<<endl; 

       break; 

       case 'La': 

       cout<<"The full name is (Lanthanum)The Atomic number is 57"<<endl; 

       break; 

       case 'Lr': 

       cout<<"The full name is (Lawrencium)The Atomic number is 103"<<endl; 


       break; 

       case 'Pb': 

       cout<<"The full name is (Lead)The Atomic number is 82"<<endl; 

       break; 

       case 'Lu': 

       cout<<"The full name is (Lutetium)The Atomic number is 71"<<endl; 

       break; 

       case 'Mg': 

       cout<<"The full name is (Magnesium)The Atomic number is 12"<<endl; 

       break; 

       case 'Mn': 

       cout<<"The full name is (Manganese)The Atomic number is 25"<<endl; 

       break; 

       case 'Mt': 

       cout<<"The full name is (Meitnerium)The Atomic number is 109"<<endl; 


       break; 


       case 'Md': 

       cout<<"The full name is (Mendelevium )The Atomic number is 101"<<endl; 

       break; 

       case 'Hg': 

       cout<<"The full name is (Mercury)The Atomic number is 80"<<endl; 

       break; 

       case 'Mo': 

       cout<<"The full name is (Molybdenum)The Atomic number is 42"<<endl; 

       break; 

       case 'Ne': 

       cout<<"The full name is (Neon)The Atomic number is 77"<<endl; 

       break; 

       case 'Nd': 

       cout<<"The full name is (Neodymium)The Atomic number is 60"<<endl; 

       break; 

       case 'Np': 

       cout<<"The full name is (Neptunium)The Atomic number is 93"<<endl; 

       break; 

       case 'Ni': 

       cout<<"The full name is (Nickel)The Atomic number is 28"<<endl; 

       break; 

       case 'Nb': 

       cout<<"The full name is (Niobium)The Atomic number is 41"<<endl; 


       break; 

       case 'N': 

       cout<<"The full name is (Nitrogen)The Atomic number is 7"<<endl; 

       break; 

       case 'No': 

       cout<<"The full name is (Nobelium)The Atomic number is 102"<<endl; 

       break; 

       case 'Os': 

       cout<<"The full name is (Osmium )The Atomic number is 76"<<endl; 

       break; 

       case 'O': 

       cout<<"The full name is (Oxygen )The Atomic number is 8"<<endl; 


       break; 

       case 'Pd': 

       cout<<"The full name is (Palladium)The Atomic number is 46"<<endl; 

       break; 

       case 'P': 

       cout<<"The full name is (Phosphorus )The Atomic number is 15"<<endl; 

       break; 

       case 'Pt': 

       cout<<"The full name is (Platinum)The Atomic number is 78"<<endl; 

       break; 

       case 'Pu': 

       cout<<"The full name is (Plutonium)The Atomic number is 94"<<endl; 

       break; 

       case 'Po': 

       cout<<"The full name is (Polonium)The Atomic number is 84"<<endl; 

       break; 

       case 'K': 

       cout<<"The full name is (Potassium)The Atomic number is 19"<<endl; 

       break; 

       case 'Pr': 

       cout<<"The full name is (Praseodymium)The Atomic number is 59"<<endl; 

       break; 

       case 'Pm': 

       cout<<"The full name is (Promethium)The Atomic number is 61"<<endl; 

       break; 

       case 'Pa': 

       cout<<"The full name is (Protactinium)The Atomic number is 91"<<endl; 

       break; 

       case 'Ra': 

       cout<<"The full name is (Radium)The Atomic number is 88"<<endl; 

       break; 

       case 'Rn': 

       cout<<"The full name is (Radon)The Atomic number is 86"<<endl; 

       break; 

       case 'Re': 

       cout<<"The full name is (Rhenium)The Atomic number is 75"<<endl; 

       break; 

       case 'Rh': 

       cout<<"The full name is (Rhodium)The Atomic number is 45"<<endl; 

       break; 

       case 'Rg': 

       cout<<"The full name is (Roentgenium)The Atomic number is 111"<<endl; 

       break; 

       case 'Rb': 

       cout<<"The full name is (Rubidium)The Atomic number is 37"<<endl; 

       break; 


       case 'Ru': 

       cout<<"The full name is (Ruthenium)The Atomic number is 44"<<endl; 

       break; 


       case 'Rf': 

       cout<<"The full name is (Rutherfordium)The Atomic number is 104"<<endl; 

       break; 

       case 'Sm': 

       cout<<"The full name is (Samarium)The Atomic number is 62"<<endl; 

       break; 

       case 'Sc': 

       cout<<"The full name is (Scandium)The Atomic number is 21"<<endl; 

       break; 

       case 'Sg': 

       cout<<"The full name is (Seaborgium)The Atomic number is 106"<<endl; 

       break; 

       case 'Se': 

       cout<<"The full name is (Selenium)The Atomic number is 34"<<endl; 


       break; 

       case 'Si': 

       cout<<"The full name is (Silicon )The Atomic number is 14"<<endl; 

       case 'Ag': 

       cout<<"The full name is (Silver)The Atomic number is 47"<<endl; 

       break; 


       case 'Na': 

       cout<<"The full name is (Sodium)The Atomic number is 11"<<endl; 

       break; 

       case 'Sr': 

       cout<<"The full name is (Strontium)The Atomic number is 38"<<endl; 

       break; 

       case 'S': 


       cout<<"The full name is (Sulfur)The Atomic number is 16"<<endl; 

       break; 

       case 'Ta': 

       cout<<"The full name is (Tantalum)The Atomic number is 73"<<endl; 

       break; 

       case 'Tc': 

       cout<<"The full name is (Technetium)The Atomic number is 43"<<endl; 

       break; 

        case 'Te': 


       cout<<"The full name is (Tellurium )The Atomic number is 52"<<endl; 

       break; 

        case 'Tb': 

       cout<<"The full name is (Terbium)The Atomic number is 65"<<endl; 

       break; 


        case 'Tl': 

       cout<<"The full name is (Thallium)The Atomic number is 81"<<endl; 


       break; 

        case 'Th': 

       cout<<"The full name is (Thorium)The Atomic number is 90"<<endl; 


       break; 

        case 'Tm': 

       cout<<"The full name is (Thulium)The Atomic number is 69"<<endl; 

       break; 

        case 'Sn': 

       cout<<"The full name is (Tin)The Atomic number is 50"<<endl; 

       break; 
        case 'Ti': 

       cout<<"The full name is (Titanium)The Atomic number is 22"<<endl; 

       break; 
        case 'W': 

       cout<<"The full name is (Tungsten)The Atomic number is 74"<<endl; 

       break; 
        case 'Uub': 

       cout<<"The full name is (Ununbium)The Atomic number is 112"<<endl; 

       break; 
        case 'Uuh': 

       cout<<"The full name is (Ununhexium)The Atomic number is 116"<<endl; 

       break; 
        case 'Uuo': 

       cout<<"The full name is (Ununoctium)The Atomic number is 118"<<endl; 

       break; 
        case 'Uup': 

       cout<<"The full name is (Ununpentium )The Atomic number is 115"<<endl; 

       break; 
        case 'Uuq': 


         cout<<"The full name is (Ununquadium )The Atomic number is 114"<<endl; 
       break; 



        case 'Uus': 

       cout<<"The full name is (Ununseptium )The Atomic number is 117"<<endl; 

       break; 

        case 'Uut': 

       cout<<"The full name is (Ununtrium)The Atomic number is 113"<<endl; 

       break; 

        case 'Uuu': 

       cout<<"The full name is (Ununium )The Atomic number is 111"<<endl; 

       break; 

        case 'U': 

       cout<<"The full name is (Uranium )The Atomic number is 92"<<endl; 

       break; 

       case 'V': 

       cout<<"The full name is (Vanadium)The Atomic number is 23"<<endl; 

       break; 

       case 'Xe': 

       cout<<"The full name is (Xenon)The Atomic number is 54"<<endl; 


       break; 

       case 'Yb': 


       cout<<"The full name is (Ytterbium)The Atomic number is 70"<<endl; 

       break; 

       case 'Y': 

       cout<<"The full name is (Yttrium )The Atomic number is 39"<<endl; 

       break; 

       case 'Zn': 

       cout<<"The full name is (Zinc)The Atomic number is 30"<<endl; 

       break; 
       case 'Zr': 

       cout<<"The full name is (Zirconium)The Atomic number is 40"<<endl; 

       break; 



       default: 

        cout<<"There is no element with that Symbol !! , please close the program and try again"<<endl; 




    return 0; 

    Sleep (5000); 



} 
} 

Answer 1

당신은 std::map을 사용할 수 있습니다 :

const std::map<std::string, std::string> m = { 
    {"H", tAtomic Number is 2"}, 
    {"Li", "The full name is (Lithium) , The Atomic number is 3"}, 
    {"Ac", "The full name is (Actinium)The Atomic number is 89"}, 
    // ... 
}; 
std::cout << "please type an Element to see its Atomic number" << std::endl; 
std::string input; 
std::cin >> input; 

const auto it = m.find(input); 
if (it == m.end()) { 
    std::cout << "There is no element with that Symbol !!" 
     "Please close the program and try again" << std::endl; 
} else { 
    std::cout << it->second << std::endl; 
}