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Do_While.cpp
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// Do_While.cpp #include <conio.h> #include <iostream> #include <ctype.h> using namespace std; int main() { int chisodau, chisocuoi, sokwh; long tientra; char traloi; do { cout<<"\nNhap chi so dien dau thang: "; cin>>chisodau; cout<<"Nhap chi so dien cuoi thang: "; cin>>chisocuoi; if (chisocuoi > chisodau && chisodau >= 0) { sokwh = chisocuoi - chisodau; if (sokwh <= 100) tientra=sokwh*1000L; //hang kieu long else if (sokwh<=200) tientra=100*1000L + (sokwh-100)*1500L; else tientra = 100 * 1000L + 100 * 1500L + (sokwh - 200) * 3000L; cout<<"So tien phai tra: "<<tientra; } else cout<<"Du lieu khong hop le"; cout<<"\nBan co tiep tuc voi gia dinh khac khong? (C/K): "; traloi = getche(); } while (toupper(traloi) == 'C'); getch(); return 0; }