Я следую инструкциям, изменив strupr на _strupr и дай другую ошибку, затем я перейду на _strupr_s, но он сказал
тип аргумента char *
может кто-нибудь помочь?
// interpreter.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <cctype>
#include "Interpreter.h"
using namespace std;
double Statement::findValue(char *id) //Return the value
{
IdNode tmp(id);
list<IdNode>::iterator i = find(idList.begin(), idList.end(), tmp);
if (i != idList.end())
return i->value;
else
issueError("unknown variable");
return 0;
}
void Statement::processNode(char *id, double e) //Update the value or add it to the list
{
IdNode tmp(id, e);
list<IdNode>::iterator i = find(idList.begin(), idList.end(), tmp);
if (i != idList.end())
i->value = e;
else
idList.push_front(tmp);
}
void Statement::readId(char *id) //Read input into an array
{
int i = 0;
if (isspace(ch))
cin >> ch;
if (isalpha(ch)){ //If it is a letter, save the subsequent numbers or letters.
while (isalnum(ch)){
id[i++] = ch;
cin.get(ch);
}
id[i] = '\0';
}
else
issueError("Identifier expected");
}
double Statement::factor() //Factor processing
{
double var, minus = 1.0;
static char id[200];
cin >> ch;
while (ch == '+' || ch == '-'){ //Is the symbol before the number
if (ch == '-') //Determine positive and negative
minus *= -1.0;
cin >> ch;
}
if (isdigit(ch) || ch == '.'){ //number
cin.putback(ch);
cin >> var >> ch; //save vaule
}
else if (ch == '('){ //Equal to the left parenthesis to handle the expression inside the parentheses
var = expression(); //Recursively processing expressions in parentheses
if (ch == ')') //The right parenthesis continues to process ch
cin >> ch;
else
issueError("right paren left out");
}
else{
readId(id);
if (isspace(ch))
cin >> ch;
var = findValue(id);
}
return minus * var;
}
double Statement::term()
{
double f = factor();
while (true){
switch (ch){
case '*':
f *= factor();
break;
case '/':
f /= factor();
break;
default:
return f;
}
}
}
double Statement::expression()
{
double t = term();
while (true){
switch (ch){
case '+':
t += term();
break;
case '-':
t -= term();
break;
default:
return t;
}
}
}
void Statement::getStatement()
{
char id[20];
char command[20];
double e;
cout << "enter a statement: ";
cin >> ch;
readId(id);
_strupr_s(strcpy(command, id));
if (strcmp(command, "STATUS") == 0)
cout << *this;
if (strcmp(command, "PRINT") == 0){
readId(id);
cout << id << " = " << findValue(id) << endl;
}
else if (strcmp(command, "END") == 0)
exit(0);
else{
if (isspace(ch))
cin >> ch;
if (ch == '='){
e = expression();
if (ch != ';')
issueError("there are some extras in the statement. ");
else
processNode(id, e);
}
else
issueError("'=' is missing");
}
}
ostream &operator<<(ostream &out, const Statement &s)
{
list<IdNode>::const_iterator i = s.idList.begin();
for (; i != s.idList.end(); i++)
out << *i;
out << endl;
return out;
}
ostream &operator<<(ostream &out, const IdNode &r)
{
out << r.id << " = " << r.value << endl;
return out;
}
int main()
{
Statement statement;
cout << "the program processes statements of the following format:\n"
<< "\t<id> = <expr>;\n\tprint <id>\n\tstatus\n\tend\n\n";
while (true)
statement.getStatement();
return 0;
}
// TODO: reference additional headers your program requires here