[問題] 陣列在傳進函式之後 sizeof 的值會不一樣
程式碼22行而已 所以直接貼上來
1 #include <stdio.h>
2
3 size_t getSize( float *ptr );
4
5 int main( void )
6 {
7 float array[ 20 ];
8
9 printf( "The number of bytes in the array is %d"
10 "\nThe number of bytes returned by getSize is %d\n",
11 sizeof( array ), getSize( array ) );
12
13 return 0;
14
15 }
16
17
18 size_t getSize( float *ptr )
19 {
20 return sizeof( ptr );
21
22 }
執行結果:
The number of bytes in the array is 80
The number of bytes returned by getSize is 4
問題(Question)：
還是看不懂為什麼第一個答案是80
第二個答案是 4
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※ 編輯: iamchyun 來自: 114.42.65.238 (05/29 00:08)
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