c语言 11-8

1、

#include <stdio.h>

void del(char *s1)
{
    char *tmp = s1;
    
    while(*tmp)
    {
        if(*tmp < '0' || *tmp > '9')
            *s1++ = *tmp++;
        else
            tmp++;    
    }
    *s1 = '\0';
} 

int main(void)
{
    char str1[128];
    printf("str1: "); scanf("%s", str1);
    
    del(str1);
    printf("result after deleting num: %s\n", str1);
    return 0;
}