switc statement designed to break usage

First

#include<stdio.h>
int main()
{
	int a;
	scanf_s("%d", &a);
		switch (a)   //进入后遇break停止，或执行完所有语句
		{
		case 1:printf("%d", a + 5);
		case 2:printf("%d", a + 4); break;
		case 3:printf("%d", a + 3);
		default:printf("%d", a + 1);break;
		}
	system("pause");
	return 0;
}



# Second
#include<stdio.h>
int main()
{
	int a;
	scanf_s("%d", &a);
		switch (a)   //进入后遇break停止，或执行完所有语句
		{
		case 1:printf("%d\t", a + 5);
		case 2:printf("%d\t", a + 4); break;
		case 3:printf("%d\t", a + 3);
		default:printf("%d\t", a + 1);
		}
	system("pause");
	return 0;
}

End

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Record Retention

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