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1. 64位Ubuntu測試結果

代碼：

#include<stdio.h>void main(void) {printf("sizeof(char) = %d\n", sizeof(char));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", sizeof(long long));printf("sizeof(float) = %d\n", sizeof(float));printf("sizeof(double) = %d\n", sizeof(double));printf("sizeof(long double) = %d\n", sizeof(long double));printf("sizeof(char *) = %d\n", sizeof(char *));printf("sizeof(int *) = %d\n", sizeof(int *));}

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結果：

baoli@ubuntu:~/c$ ./a.out sizeof(char) = 1 sizeof(short) = 2 sizeof(int) = 4 sizeof(long) = 8 sizeof(long long) = 8 sizeof(float) = 4 sizeof(double) = 8 sizeof(long double) = 16 sizeof(char *) = 8 sizeof(int *) = 8

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2. 32位CPU測試結果

結果：

[baoliw@AONTFN07 ~]$ ./a.out sizeof(char) = 1 sizeof(short) = 2 sizeof(int) = 4 sizeof(long) = 4 sizeof(long long) = 8 sizeof(float) = 4 sizeof(double) = 8 sizeof(long double) = 12 sizeof(char *) = 4 sizeof(int *) = 4

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