各种数据类型的空间大小

#define _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>

//各种数据类型的空间大小

int main()

{

printf("char=%d\n",sizeof(char));

printf("short=%d\n",sizeof(short));

printf("int=%d\n",sizeof(int));

printf("long=%d\n",sizeof(long));

printf("long long=%d\n",sizeof(long long));

printf("float=%d\n",sizeof(float));

printf("double=%d\n",sizeof(double));

return 0;

}

比较两个数的大小

#define _CRT_SECURE_NO_WARNINGS 1

//比较两个数的大小

#include<stdio.h>

int Max(int x,int y)

{

if (x>y)

{

 return x;  

}

else

{

 return y;

}

}

int main()

{

int num1=0;

int num2=0;

int max=0;

printf("请输入需要比较大小的两个数>:");

scanf("%d%d",&num1,&num2);

max=Max(num1,num2);

printf("最大值为:%d",max);

return 0;  

}

位运算符

#define _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>

//位运算符

int main()

{

//按位与

int num1=3;

int num2=5;

int result=0;

result = num1&num2;

printf("%d\n",result);

//按位或

result = num1|num2;

printf("%d\n",result);

//按位异或

result = num1^num2;

printf("%d\n",result);

//逻辑反运算

result=!num1;

printf("%d\n",result);

//按位取反

result=~num1;

printf("%d",result);

}