#include <stdio.h>

#include <stdio.h>

#include <string.h>

main(){

int i=0,j=0;

char str[10];

printf("\n\nInput a number (length<=9) : ");

scanf( 1);

printf("the length of the string is : %d\n", 2 );

for (i=0,j=strlen(str)-1;i<j;i++,j--){

if ( 3 )continue;

else break;

}

printf("i=%d,j=%d\n",i,j);

if ( 4 ) printf("the number is not a palindrome.");

else printf("the number is a palindrome!");

}为数字的地方要填代码！判断是否会文数如12321,14541

1:scanf("%s",str);

2:strlen(str)

3:if(str[i]＝str[j])

4:if(i！＝j)