STM32 keil 下編程，各種數據類型的長度

源碼：

void test_str2num(void)
{
    printf("\r\n\r\nint is %d",sizeof(int));
    printf("\r\nlong int is %d",sizeof(long int));
    printf("\r\nlong long int is %d",sizeof(long long int));
    printf("\r\nfloat is %d",sizeof(float));
    printf("\r\ndouble float is %d",sizeof(double));
    printf("\r\nchar is %d",sizeof(char));
    printf("\r\nshort is %d\r\n",sizeof(short));
    
}

輸出顯示：
int is 4
long int is 4
long long int is 8
float is 4
double float is 8
char is 1
short is 2

可以看到 int,long int,float 均爲 4 字節。而 long long int 和 double 均爲 8 字節。而 short 則爲 2 個字節，char 爲 1 個字節。