C1  11 23 36
C2  45 45 45
C3  44 44 44
C1  88 55 33
C2  44 55 66
C3  44 66 98
这是要提取的行数据，可是只提取出来C2 4C2 4的结果呢
#include <stdio.h>
#include <stdlib.h>
int main()
{
    char line[6];
    FILE *fp1,*fp2;
    if ((fp1=fopen("test1.txt","r"))==NULL)
    {
        printf("cannot open file\n");
        
    }
    if ((fp2=fopen("test2.txt","w"))==NULL)
    {
        printf("cannot open file\n");
        
    }
    while ((fgets(line,6,fp1))!=NULL)
    {
        if(line[0]=='C'&&line[1]=='2')
        {
            fputs(line,fp2);
            printf("%s",line);
        }

   
    }
    fclose(fp1);
    fclose(fp2);
    return 0;
}

是奥，谢谢啊