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- #include <stdio.h>
- char *error(char *num)
- {
- if (*num=='\0')
- return NULL;
- if (num[0]>num[1])
- return &num[1];
- return error(num+1);
- }
- int main()
- {
- char *str="121452";
- char *ans;
- char n[20]="0";
- char num;
- int i=0;
- printf("enter numbers\n");
- while (scanf("%c",&n[i])!=EOF){
- i++;
- }
- if (ans=error(n)!=NULL)
- {
- *ans=(ans-1)+1);
- }
- printf("%c",*ans);
- return 0;
- }
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