c语言 9-10

1、

#include <stdio.h>

void del(char x[])
{
    int len = 0;
    while(x[len])
        len++;
    char tmp[len];
    int i = 0, j = 0;
    while(x[i])
    {
        if(x[i] < '0' || x[i] > '9')
        {
            tmp[j] = x[i];
            j++;
        }
        i++;
    }
    i = 0;
    while(x[i])
    {
        x[i] = '';
        i++;
    }
    while(j-- > 0)
        x[j] = tmp[j];
}

int main(void)
{
    char str[128];
    printf("str: "); scanf("%s", str);
    
    del(str);
    int i = 0;
    while(str[i])
        putchar(str[i++]);
    return 0;
}

2、

#include <stdio.h>

void deld(char x[])
{
    int len = 0;
    while(x[len])
        len++;
    char tmp[len];
    int i = 0;
    int j = 0;
    while(x[i])
    {
        if(x[i] < '0' || x[i] > '9')
        {
            tmp[j] = x[i];
            j++;
        }
        i++;
    }
    for(i = 0; i < len; i++)
    {
        x[i] = '';
    }
    for(i = 0; i < j; i++)
    {
        x[i] = tmp[i];
    }
}

int main(void)
{
    char str[128];
    printf("str: "); scanf("%s", str);
    deld(str);
    printf("del result: %s
", str);
    return 0;
}

3、

#include <stdio.h>

void defdi(char x[])
{
    int len = 0;
    while(x[len])
        len++;
    int i = 0;
    while(x[i])
    {
        if(x[i] >= '0' && x[i] <= '9')
        {
            int j = i;
            while(x[j])
            {
                x[j] = x[j + 1];
                j++;
            }
            i--;
        }
        i++;
    }
}

int main(void)
{
    char str[128];
    printf("str: "); scanf("%s", str);
    defdi(str);
    printf("def result: %s
", str);
    return 0;
}

4、

#include <stdio.h>

void del(char x[])
{
    int i = 0;
    while(x[i])
    {
        if(x[i] >= '0' && x[i] <= '9')
            printf("");
        else
            putchar(x[i]);
        i++;
    }
}

int main(void)
{
    char str[128];
    printf("str: "); scanf("%s", str);
    puts("
=============");
    del(str);
    return 0;
}

5、

#include <stdio.h>

void deld(char x[])
{
    int i = 0;
    while(x[i])
    {
        if(x[i] < '0' || x[i] > '9')
            putchar(x[i]);
        i++;
    }
}

int main(void)
{
    char str[128];
    printf("str: "); scanf("%s", str);
    puts("
=====================");
    deld(str);
    return 0;
}

6、

#include <stdio.h>

void deldi(char x[])
{
    int len = 0;
    while(x[len])
        len++;
    char tmp[len];
    int i = 0, j = 0;
    while(x[i])
    {
        if(x[i] < '0' || x[i] > '9')
        {
            tmp[j] = x[i];
            j++;
        }
        i++;
    }
    for(i = 0; i < j; i++)
    {
        x[i] = tmp[i];
    }
    x[j] = '';
}

int main(void)
{
    char str[128];
    printf("str: "); scanf("%s", str);
    deldi(str);
    puts("
==============");
    printf("del result: %s
", str);
    return 0;
}