字符串压缩解压c语言

根据提供的引用内容，我们可以了解到这是一道关于字符串压缩解压的C语言题目。下面是对该问题的回答：

1. 字符串压缩

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

int main()
{
    char c;
    char str[1001];
    int count = 1;
    scanf("%c\n", &c);
    fgets(str, 1001, stdin);
    if (c == 'C')
    {
        for (int i = 0; i < strlen(str); i++)
        {
            if (str[i] == str[i + 1])
            {
                count++;
            }
            else
            {
                if (count > 1)
                {
                    printf("%d", count);
                }
                printf("%c", str[i]);
                count = 1;
            }
        }
    }
    return 0;
}

2. 字符串解压

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

int main()
{
    char c;
    char str[1001];
    int count = 0;
    scanf("%c\n", &c);
    fgets(str, 1001, stdin);
    if (c == 'D')
    {
        for (int i = 0; i < strlen(str); i++)
        {
            if (str[i] >= '0' && str[i] <= '9')
            {
                count = count * 10 + str[i] - '0';
            }
            else
            {
                if (count == 0)
                {
                    printf("%c", str[i]);
                }
                else
                {
                    for (int j = 0; j < count; j++)
                    {
                        printf("%c", str[i]);
                    }
                    count = 0;
                }
            }
        }
    }
    return 0;
}