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[C Language] sizeof( )函式的用法


一般變數大小
sizeof(char) = 1
sizeof(short) = 2
sizeof(int) = 4
sizeof(long) = 4
sizeof(float) = 4
sizeof(double) = 8

指標的大小為四個位元組
sizeof(void *) = 4
sizeof(int *) = 4
sizeof(char *) = 4
sizeof(long *) = 4
例：
void *ptr[6];
sizeof(ptr) = 6*4 = 24

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※ 作者: rikaka 時間: 2012-04-05 23:56:15