C语言数据类型占用字节大小测试

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printf("int size = %dn",sizeof(int));
printf("unsigned int size = %dn",sizeof(unsigned int));
printf("short int size = %dn",sizeof(short int));
printf("long size = %dn",sizeof(long));
printf("long int size = %dn",sizeof(long int));
printf("long long int size = %dn",sizeof(long long int));
printf("char size = %dn",sizeof(char));
printf("unsigned char size = %dn",sizeof(unsigned char));
printf("double size = %dn",sizeof(double));
printf("float size = %dn",sizeof(float));

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/*输出
int size = 4
unsigned int size = 4
short int size = 2
long size = 4
long int size = 4
long long int size = 8
char size = 1
unsigned char size = 1
double size = 8
float size = 4
*/