//计算各种类型数据占用的字节数 #include <stdio.h> int main() { printf("Size of int is: %d\n",sizeof(int)); printf("Size of short int is: %d\n",sizeof(short)); printf("Size of long int is: %d\n",sizeof(long)); printf("Size of unsigned int is: %d\n",sizeof(unsigned int)); printf("Size of float is: %d\n",sizeof(float)); printf("Size of double is: %d\n",sizeof(double)); printf("Size of long double is: %d\n",sizeof(long double)); printf("Size of char is: %d\n",sizeof(char)); return 0; }