Question

switch case和return的用法

int b(int a) { case(1):a+=1;return a; case(2):a+=2;return a; case(3):a+=3;return a; } 这段函数定义中当a=1时为社么只运行case(1)的语句,是不是当返回数据给函数时,就算函数调用完趁里?

Answer 1

百度知道不支持缩进，看代码累

switch(a%3)
{
``case 0: //当（a%3）==0时执行下面的语句直到遇到break或return
````m++;
````break;
``case 1: //当（a%3）==1时执行下面的语句直到遇到break或return
````m++;
``````switch(b%2) // 此switch在m++执行后继续执行
``````{
````````case 0: //当b%2==0时执行下面的语句直到遇到break或return
``````````m++;
``````````break;
````````default: //当b%2 !=0时执行下面的语句直到遇到break或return或后面没语句了自然结束此switch
``````````m++;
``````}
}

Answer 2

不光是switch case。。。
遇到return 就是退出该函数了，如果是void的类型的函数，可以直接写"return;"

Answer 3

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and now
i'm like
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i'm like
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i'm like
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i thought you'd always be mine (mine)
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i'm like
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i'm like
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i thought you'd always be mine
for you, i would have done whatever
and no i can't believe we're not together
and i'm gonn' play it cool
while i'm losin you
i'll buy you anything
i'll buy you any ring
cause i'm in pieces
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shake me til' you can wake me from this bad dream*
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i just can't believe my first love will be around
baby, baby, baby noo
i'm like
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i'm like
baby, baby, baby noo
i thought you'd always be mine (mine)
baby, baby, baby noo
i'm like
baby, baby, baby noo
i'm like
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i thought you'd always be mine
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And nobody came between us or could ever come above
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Oh i was starstruck.
She woke me up daily dont need no starbucks
She made my heart pound
Asking for a beat when i see her in the street
And in the school on the playground
But i really wanna see her on the weekends
She knows she got me dazy
Cause she was so amazing and now my heart is breaking
But i just keep on sayin
baby, baby, baby noo
i'm like
baby, baby, baby noo
i'm like
baby, baby, baby noo
i thought you'd always be mine
baby, baby, baby noo
i'm like
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i'm like
baby, baby, baby noo
i thought you'd always be mine
i'm gone yeahh... i'm all gone
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Answer 4

是的 不管什么时候 遇到return 就表示函数调用结束了

Answer 5

是的，执行到return函数就退出了