VC ++ 6.0 to debug using C language code

VC ++ 6.0 to debug using C language code

Step One: Compile

C language is a compiled language, so we added a breakpoint during debugging, unlike Python that can be added directly to the breakpoint in VC ++ 6.0, the just finished code is not directly increase breakpoint.
Here Insert Picture DescriptionAs shown above, this time has not been compiled, you can see the right side of the toolbar is not clicking a few buttons, only the leftmost compiled two buttons can be used. We must first of this code is compiled.
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After compilation, we have produced a good exe file, then find the right number of buttons is ready for use.
Side note several functions of the buttons:
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left to right: compilation, production, stop generating, generate and execute, debug, add / remove breakpoints

Step Two: Start Debugging

, You can start debugging the code by the previous step. The following is the code used in the demo:

#include<stdio.h>
int main()
{
	int num1 = 5,num2 = 10;
	char ch = 'A';
	int i;
	printf("num1=%d, num2=%d, ch=%c\n",num1,num2,ch);
	for(i = 0;i < 4; i++)
	{
		num1 ++;
		num2 += 2;
	}		
	ch += 5;
	printf("num1=%d, num2=%d, ch=%c\n",num1,num2,ch);
	num1 /= 3;
	num2 %= 5;
	ch += 2;
	printf("num1=%d, num2=%d, ch=%c\n",num1,num2,ch);
	return 0;
}

这里将断点加在了这两个位置
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然后点击调试按钮,或按快捷键F5。
第一次进行调试时,会弹出一个调试工具栏
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关于里面各个按键功能不一一介绍,可自行尝试。如果关掉了这个窗口,可以通过鼠标右键工具栏,点击调试再找出来。
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好了,接下来一步步开始调试。按下快捷键F10,可以一句一句向下走。
Here Insert Picture Description这里我们从第一个断点走到了第一个printf,下面会显示出已经用到的变量和变量值。
在执行到这一句时,两个整型变量num1,num2已经进行过初始化,而i未进行初始化,同时是一个局部变量,所以显示的值是随机分配给的一个值。字符变量ch的值中,A是它所代表的字符,65是这个字符的ASC码值。printf在stdio.h这个头文件里被定义成的是有返回值的,同样scanf也是,所以在调试时我们会看到它的返回值。(在一些开发环境中,如VS,使用printf或scanf都会报waring,提示忽略了它们的返回值,也是这个原因)
那么我们继续向下走。
Here Insert Picture Description这里是进入到了一个for循环,在按F9逐句调试时,会重复走{}括起来的这几行。如果循环次数过多,想直接结束对这个for的调试,可以按下shift+F11,也是直接跳出对函数调试的快捷键。
最后调试结束,按下F5,就可以终止调试,回到开发状态了。

可能会出现的问题

在调试执行下一步中,按下F9或点击调试工具栏里的按钮,有的电脑会出现这个提示。
Here Insert Picture Description原因是VC++和Win7及以后版本的兼容性有问题,毕竟其不是同一时代的产品。提示需要管理员的权限,其解决办法如下:首先选择VC++的快捷方式,右键单击,选择“以管理员身份运行”,再在菜单里选择“文件”打开你要调试的程序即可进行调试。

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Origin blog.csdn.net/lhx0525/article/details/103697230