**This is an old revision of the document!**
#include <iostream> #include <string> #include <time.h> using namespace std; int main() { srand(time(0)); string ans; do { cout << "\"Q\" -- quit\n"; cout << "\"C\" -- compute\n"; cout << "\"S\" -- say something nice\n"; cout << "what do you want me to do? "; cin >> ans; // getline(cin, ans); if ((ans == "C") || (ans == "c")) { double duanestotal = 0.01; double kevinstotal = 0.1; double cindystotal = 0.1; double duanescurrent = 0.01; double kevinscurrent = 0.10; double cindyscurrent = 0.10; for (int i = 1; i <= 12; i++) { cout << "For the month " << i << endl; cout << "kevins allowance this month = " << kevinscurrent << " and running total " << kevinstotal << endl; cout << "duanes allowance this month = " << duanescurrent << " and running total " << duanestotal << endl << endl; cout << "cindys allowance this month = " << cindyscurrent << " and running total " << cindystotal << endl << endl; // get ready for the next month... duanescurrent *= 2; kevinscurrent += 0.10; cindyscurrent = cindyscurrent + double(rand() % 11 - 5) / 100.0; duanestotal += duanescurrent; kevinstotal += kevinscurrent; cindystotal += cindyscurrent; } } else if ((ans == "S") || (ans == "s")) { cout << "Something nice.\n"; } else if ((ans == "Q") || (ans == "q")) { cout << "Ok, bye\n"; } else { cout << "invalid input, try again.\n"; } } while ((ans != "Q") && (ans != "q")); //system("pause"); return 0; }
This will loop forever on bad int's.
#include <iostream> #include <string> #include <time.h> using namespace std; int main () { srand(time(0)); int ans; cout << "\"0\" -- quit\n"; cout << "\"1\" -- compute\n"; cout << "\"2\" -- say something nice\n"; cout << "what do you want me to do? "; cin >> ans; while((ans != 0)) { if ((ans == 1)) { double duanestotal = 0.01; double kevinstotal = 0.1; double cindystotal = 0.1; double duanescurrent = 0.01; double kevinscurrent = 0.10; double cindyscurrent = 0.10; for (int i = 1; i <= 12; i++) { cout << "For the month " << i << endl; cout << "kevins allowance this month = " << kevinscurrent << " and running total " << kevinstotal << endl; cout << "duanes allowance this month = " << duanescurrent << " and running total " << duanestotal << endl << endl; cout << "cindys allowance this month = " << cindyscurrent << " and running total " << cindystotal << endl << endl; // get ready for the next month... duanescurrent *= 2; kevinscurrent += 0.10; cindyscurrent = cindyscurrent+double(rand()%11-5)/100.0; duanestotal += duanescurrent; kevinstotal += kevinscurrent; cindystotal += cindyscurrent; } } else if ((ans == 2)) { cout << "Something nice.\n"; } else { cout << "invalid input, try again.\n"; } cout << "\"0\" -- quit\n"; cout << "\"1\" -- sing\n"; cout << "\"2\" -- say something nice.\n"; cout << "what do you want me to do? "; cin >> ans; } //system("pause"); return 0; }
Note the use of a string
#include <iostream> #include <string> #include <time.h> using namespace std; int main () { srand(time(0)); string ans; cout << "\"0\" -- quit\n"; cout << "\"1\" -- compute\n"; cout << "\"2\" -- say something nice\n"; cout << "what do you want me to do? "; getline(cin,ans); while((ans != "0")) { if ((ans == "1")) { double duanestotal = 0.01; double kevinstotal = 0.1; double cindystotal = 0.1; double duanescurrent = 0.01; double kevinscurrent = 0.10; double cindyscurrent = 0.10; for (int i = 1; i <= 12; i++) { cout << "For the month " << i << endl; cout << "kevins allowance this month = " << kevinscurrent << " and running total " << kevinstotal << endl; cout << "duanes allowance this month = " << duanescurrent << " and running total " << duanestotal << endl << endl; cout << "cindys allowance this month = " << cindyscurrent << " and running total " << cindystotal << endl << endl; // get ready for the next month... duanescurrent *= 2; kevinscurrent += 0.10; cindyscurrent = cindyscurrent+double(rand()%11-5)/100.0; duanestotal += duanescurrent; kevinstotal += kevinscurrent; cindystotal += cindyscurrent; } } else if ((ans == "2")) { cout << "Something nice.\n"; } else { cout << "invalid input, try again.\n"; } cout << "\"0\" -- quit\n"; cout << "\"1\" -- sing\n"; cout << "\"2\" -- say something nice.\n"; cout << "what do you want me to do? "; getline(cin,ans); } //system("pause"); return 0; }