程序代码：

# include <stdio.h>
# include <string.h>

int main()
{
    char a[100]="bkgsg624gfjehgf2398fgshe", b[100];
    int i, j, n;

    n = 0;
    for (i=0; i<strlen(a); i++)
    {
        if (a[i]>='0'&&a[i]<='9')
        {
            n++;
            continue;
        }
        else
            for (j=0; i<strlen(a)-n; j++)
                b[j] = a[i];          //筛选出非数字的字符
    }
    printf("输出剩余的字符: \n");
    puts(b);
    printf("\n");

    return 0;
}