(C/C++) 32bit 64bit 記憶體空間
Posted ollie-lin
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char str[] = "Hello" ; char *p = str ; printf("sizeof(str) = %d\n", sizeof(str)); printf("sizeof(p) = %d\n", sizeof(p)); printf("sizeof(short) = %d\n", sizeof(short)); printf("sizeof(int) = %d\n", sizeof(int)); printf("sizeof(long) = %d\n", sizeof(long)); printf("sizeof(long long) = %d\n\n", sizeof(long long)); printf("sizeof(size_t) = %d\n", sizeof(size_t)); printf("sizeof(double) = %d\n", sizeof(double)); printf("sizeof(long double) = %d\n", sizeof(long double));
64 bit :
sizeof(str) = 6 sizeof(p) = 8 sizeof(short) = 2 sizeof(int) = 4 sizeof(long) = 8 sizeof(long long) = 8 sizeof(size_t) = 8 sizeof(double) = 8 sizeof(long double) = 16
32 bit :
sizeof(str) = 6 sizeof(p) = 4 sizeof(short) = 2 sizeof(int) = 4 sizeof(long) = 4 sizeof(long long) = 8 sizeof(size_t) = 4 sizeof(double) = 8 sizeof(long double) = 12
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