Question

编程：编写函数change使输入的字符串按反序存放，在主函数中输入和输出字符串。例如输入是：abcdefg，则输

出gfedcba

Answer 1

#include <stdio.h>
#include<string.h>
void chang(char ch[])
{
int i;
int len =strlen(ch);
i=0;
char c;
int j = len-1;
while(j>i)
{
c=ch[i];
ch[i] = ch[j];
ch[j] =c;
i++;
j--;
}
}
int main()
{
char ch[81];
gets(ch);
printf("\nbefore change:\n");
printf("%s",ch);
chang(ch);
printf("\nafter change:\n");
printf("%s",ch);
getchar();
return 0;

}