.

{

int i ,length; char tmp;

length = strlen( s );

for (i = 0;i < length / 2; i++) {

tmp = s[i];

s[i] = s[length - i - 1]; s[length - i - 1] = tmp; } }

void main( ) { char a[N];

printf ( \ printf ( \ fun ( a ); printf(\

printf ( \ puts ( a ); }

43、编写程序，依次取出字符串s1中所有数字字符，形成新的字符串s2。

#include

.

.

void fun(char *s) {

int i,j;

for(i=0,j=0; s[i]!='\\0'; i++) if(s[i]>='0' && s[i]<='9')

s[j++]=s[i]; s[j]='\\0';

}

void main() {

char item[80];

printf(\ printf(\ fun(item);

printf(\string \\\}

.

of changing is :