熱心網友

#include#includedouble add(double x,double y){return x+y;}double mns(double x,double y){return x-y;}double multiply(double x,double y){return x*y;}double divide(double x,double y){return x/y;}void print(void){coutchoose;switch (choose){case 1:coutnum1num2;coutnum1num2;coutnum1num2;coutnum1num2;coutnum1;cout<

熱心網友

that's ok