C语言字符转换

#include "stdio.h" #include "stdlib.h" #include "string.h" main() { long i,j,sum=0,a[100],z=0; char ch[2000]; gets(ch); for(i=0;i<strlen(ch);i++,sum=0) if(ch[i]>='0'&&ch[i]<='9')/&