Why You should always use code editor with coloring support

Consider the following code:

int main(void)
{
 int x=10,y=20,res;

 switch(x)
 {
 	case 2:
		 y=10;  
		 break;    
	case 4:
		 y=33;
		 break;
	case 6:
		 y=44;
		 break;
	case 8:
		 y=55;
		 break;
	defualt:
		 y=100;	
		 break;
 } 
printf("y=%d\n",y);

 return 0;
}

it prints:

y=20

The problem here is the switch statement that has a default part but it misspelled (defualt instead of default)

Why it is not a compilation error? in C you can write anything if you put colon (:) after – it declares a goto label

so the result is because there is no default section in this switch

Lets see the code with code highlights:

int main(void)
{
 int x=10,y=20,res;

 switch(x)
 {
 	case 2:
		 y=10;  
		 break;    
	case 4:
		 y=33;
		 break;
	case 6:
		 y=44;
		 break;
	case 8:
		 y=55;
		 break;
	defualt:
		 y=100;	
		 break;
 } 
printf("y=%d\n",y);

 return 0;
}

It is easier to notice the difference between the case keyword and the misspelled default

Conclusion:

Always work with editor that support coloring, also use static analysis code tool