C_利用函数的引用调用实现两数的交换
源码:
# include <stdio.h>
void swap(int *x, int *y);
int main()
{
int i, j;
i = 12;
j = 36;
printf("i and j before swapping: %d %d\n", i, j);
swap(&i, &j); // 传递变量i和j的地址,深刻理解此时:&i为变量的地址,而i为变量(值)
// 调用swap函数的传递过程为:x=&i ; y=&j ;
printf("i and j after swapping: %d %d\n", i, j);
return 0;
}
void swap(int *x, int *y) // 深刻理解此时:*x为变量(值)而x为指针(地址)
{
int temp;
temp = *x; /* 存储变量x的值 */
*x = *y; /* 将y的值放入到x中 */
*y = temp; /* 将x的值放入到y中 */
}
相关文档:
源码:
# include <stdio.h>
int main()
{
/* 定义一个整数类型的变量,用来存放后面算式的值 */
int logic;
int a = 1;
int b = 2;
int c = 3;
&n ......
源码:
# include <stdio.h>
int main()
{
int x, y, z, mid, dec;
printf("请任意输入三个整数:\n");
scanf("%d %d %d", &x, & ......
源码:
# include <stdio.h>
int main()
{
/* sex代表输血者的性别,weight代表输血者的体重,cubage代表输血量 */
int sex, weight, cubage;
printf("请给出输血者的性别(女性为负数)和体重:(用逗号隔开)");
&nbs ......
源码:
# include <stdlib.h>
# include <stdio.h>
int main()
{
int month;
int day;
printf("please input the month number: ");
scanf("%d", &mo ......
源码:
/* 学生成绩查询系统 */
# include <stdio.h>
# include <stdlib.h>
int main( )
{
int select;
int i, j;
int score[5][7];
int average = 0;
int sum = 0;
&n ......