C代码出现故障。 Windows显示文件已停止运行 [英] The C code is malfunctioning . Windows display the file has stopped functioning

问题描述

唯一可能导致问题的是字符串。

当我们进入第一个acid_choice循环时代码出现故障

The only thing that can cause problem is probably the string.
the code is malfunctioning when we enter the first acid_choice loop

#include<stdio.h>
#include<conio.h>
#include<string.h>
main()
{
	int choice,ans_acid,ans_basic,counter=0;
	char acid[100];
	char basic[100];
	printf("\nThis helps in finding out which salt is present\nThe present process identifies acid radicals cl, br and nitrate\n bacic radicals are lead and silver\n salts which can be detected are:- 1.lead chloride\n2.silver chloride\n3lead bromide \n4.silver bromide\n5.silver nitrate\n6. lead nitrate");
	printf("\npress 1 for acid radical and 2 for basic radical check\n");
	scanf("%d",&choice);
	that:
		if(choice==1)
		{
			printf("\nAdd concentrated sulphuric acid to the solution");
			counter++;
			printf("\nexpose it to glass rod diped in ammonium hydroxide. if colorless gas with pungent gas press 1 \nbrown gs and solution is not blue press 2\nlight brown gas and brown gas with pieces of copper turning and solution turns blue in test tube press 3");
			scanf("%d",ans_acid);
			switch(ans_acid)
			{
				case 1:
					strcpy(acid, "chroride");
					//confirmatiory test space
					break;
				case 2:
					strcpy(acid, "bromide");
					//confirmatiory test space
					break;
				case 3:
					strcpy(acid, "nitrate");
					//confirmatiory test space
					break;
			}	
		}
		else if(choice==2)
		{
			printf("\n add dilute hydro chloric acid to the salt");
			counter++;
			printf("\nif ppt disolves in water press 1. \n if ppt is unsolube in water press 2.");
			scanf("%d",&ans_basic);
			switch(ans_basic)
			{
				case 1:
					strcpy(basic, "lead");
					//confirmatiory test space
					break;
				case 2:
					strcpy(basic, "silver");
					//confirmatory test space
				break;
			}
		}
	if(counter==1)
	{
		if(choice==1)
		{
			choice=2;
			goto that;
		}
		if(choice==2)
		{
			choice=1;
			goto that;
		}
	}
	printf("salt is %s %s", basic, acid);
	return 0;
}

我的尝试：



尝试更改代码结构。

从switch切换到if else，

使用malloc。

What I have tried:

tried changing structure of code.
swithced from switch to if else,
used malloc.

推荐答案

当你不明白什么你的代码正在做或为什么它做它做的事情，答案是调试器。

使用调试器来查看你的代码在做什么。只需设置断点并查看代码执行情况，调试器允许您逐行执行第1行并在执行时检查变量，这是一个令人难以置信的学习工具。



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调试器在这里向您展示您的代码正在做什么以及您的任务是与它应该做的比较。

调试器中没有魔法，它没有发现错误，它只是帮助你。当代码没有达到预期的效果时，你就会接近一个错误。

When you don't understand what your code is doing or why it does what it does, the answer is debugger.
Use the debugger to see what your code is doing. Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute, it is an incredible learning tool.

Debugger - Wikipedia, the free encyclopedia[^]
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
Basic Debugging with Visual Studio 2010 - YouTube[^]
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.

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