v1.1 if all algorithm are in one function, it will expand. so each operate type should be separated.
question: if add scientific
operation.cpp:
#include "operation.h"
int OperationAdd(string number1, string number2){
int result= atoi(number1.c_str())+atoi(number2.c_str());
return result;
}
int OperationMinus(string number1, string number2){
int result= atoi(number1.c_str())-atoi(number2.c_str());
return result;
}
int OperationBy(string number1, string number2){
int result= atoi(number1.c_str())*atoi(number2.c_str());
return result;
}
int OperationDivide(string number1, string number2){
int result= atoi(number1.c_str())/atoi(number2.c_str());
return result;
}
int Operation(string number1, string number2, string operateType){
int result=0;
if(operateType=="+"){
result = OperationAdd(number1, number2);
}
else if(operateType=="-"){
result = OperationMinus(number1, number2);
}
else if(operateType=="*"){
result = OperationBy(number1, number2);
}
else if(operateType=="/"){
result = OperationDivide(number1, number2);
}
else{
result =0;
}
return result;
}
原文：http://www.cnblogs.com/dannykong/p/4293426.html