#include "stdio.h"
void main(void)
{
    char *keywords[] = {"auto", "char", "double", "float", "int", "long", "short"};
    char a[100], *b[100][100];
    int x = 0, m = 0, c;
    int out = 0, in = 1, state1, state2;
        state1 = state2 = out;
    while( (c = getchar()) != EOF)
    {
        if ( c == ';' || c == '(' || c == ' ')
            state2 = out;
        if (!(c >= 65 && c <= 90 || c >= 97 && c<= 122) && state1 == in && state2 == in)
        {
            strcpy(b[m][100], a);
            m++;
        }
        if (!(c >= 65 && c <= 90 || c >= 97 && c<= 122))
        {
            state1 = out;
            x = 0;
        }
        else
            state1 = in;
        if (state1 == in)
        {
            a[x] = c;
            a[x + 1] = 0;
            x++;
        }
        for(int i = 0; i < 7; i++)
            if (strcmp(a, keywords[i]) == 0)
            {
                state2 = in;
                state1 = out;    //为了不把关键字当作标识符
            }
    }
}

===============================================================================================================
为什么

char a[100] ="fsadfdsa";就可以？
但是char b[100][100];
b[0][100] = "fdsafsad";就不行了？

知道哪出错了
抱歉
我有TMD在这丢人了