任何人都可以帮助解决程序中的问题 [英] Can anyone help what is wrong in the program

问题描述

#include <iostream>
#include <string>

using namespace std;

void start_menu()
{
	do{
		char choice;
		cout << " VaruBanditen" <<       endl
			<< " ------------" <<    endl
			<< endl << " Varor:" << endl
			<< "   (1) S?ckpipa\t50kr\t (5)  Isglass\t\t 2kr" <<           endl
			<< "   (2) Potta\t10kr\t (6)  Fotboll\t\t15kr" <<                       endl
			<< "   (3) Fiskn?t\t25kr\t (7)  Skruvmejsel\t10kr"  <<         endl
			<< "   (4) Dunjacka\t95kr\t (8)  Toalettpapper\t 7kr" <<        endl
			<< endl << " Myntinkast:" << endl << " [A] 10kr  [B] 5kr  [C] 1kr"

			<< endl << " Kredit: " << start_menu().s_change() << "Kr" <<          endl

			<< endl << " [V] L?gg till/ta bort varor" << endl
			<< " [Q] Avsluta programmet" << endl << endl
			<< " -----------" << endl
			<< " Angel val: ";

		cin >> choice;
		a.do_choice(choice);
	}while((a.choice != 'Q') || (a.choice != 'q'));
}

在函数`void start_menu()'':
一个''未声明(首先使用此功能)
(每个未声明的标识符对于出现在其中的每个功能仅报告一次.)


预期的init声明符，位于}}令牌之前
预期的`，''或`;''在''}''标记之前

''}''标记之前的预期声明

[edit]粘贴了以下作者贡献的错误消息[/edit]

In function `void start_menu()'':
a'' undeclared (first use this function)
(Each undeclared identifier is reported only once for each function it appears in.)


expected init-declarator before ''}'' token
expected `,'' or `;'' before ''}'' token

expected declaration before ''}'' token

[edit]pasted error messages from authors contribution below[/edit]

推荐答案

您确定要这样做:

Are you sure you wanted to do this:

void start_menu()
...
			<< endl << " Kredit: " << start_menu().s_change() << "Kr" <<          endl
...

即使编译(不应该编译)，也会导致无限循环...

Even if it compiled (which it shouldn''t) it would cause an infinite loop...

(((a.choice！=``Q'')|| (a.choice！=``q''))

a将始终为true.选择只能是``Q''或``q''
我想你是说

(((a.choice！=``Q'')&&(a.choice！=``q''))

((a.choice != ''Q'') || (a.choice != ''q''))

will always be true as a.choice can only be either ''Q'' or ''q''
I think you meant

((a.choice != ''Q'') && (a.choice != ''q''))

使用

while((choice != ''Q'') || (choice != ''q''));

代替

instead of

while((a.choice != ''Q'') || (a.choice != ''q''));

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