学习比较--数组与指针1

#include <stdio.h>#include <iostream>using namespace std;f(){static int c = 3;c++;return c;}//计算字符串长度int fu(char* s){char *p = s;while (*p != '/0'){p++;}return (p - s);}//递归void fun(char *s){if (*s){fun(++s);printf("%s/n", --s);}}//从字符串中删除小于字符‘n’的字符void fun1(char s1[]){int i, j;for (i=j=0; *(s1 + i) != '/0'; i++){if (*(s1+i) < 'n'){*(s1 + j) = *(s1 + i); //如果j != i, 表示第j个元素为大于‘n’的字符，则把第i个元素覆盖到j位置元素j++;}}*(s1 + j) = '/0';}void fun2(int b[]){int i = 0;while (b[i] <= 10) //当元素大于10时，则循环退出{b[i] += 2;i++;}}int main(){static char str[] = "123";fun(str);int i, k;char str1[] = "morning", *pstr;pstr = str1;fun1(pstr);cout << pstr << endl;int (*p)(); //define funtion pointerp = f;for (i = 0; i < 2; i++){k = p();}printf("k=%d/n", k);int a[] = { 1, 5, 10, 9, 13, 7};fun2(a + 1);for (i = 0; i < 6; i++){printf("a[%d] =%d/n", i, a[i]);}return 0;} 

 

 

 

运行结果：

 

3

23

123

mig

k=5

a[0]=1

a[1]=7

a[2]=12

a[3]=11

a[4]=13

a[5]=9