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Reading file in C


void readLine()
{
    FILE *fpTest;
    fpTest = fopen ( "test.txt", "r" );
    int countRead = 0,countLine = 0,countCodeDataLine = 0,length = 0;
    if(fpTest ==NULL){
        printf("error in opening test.txt file" ); // perror
        exit(0);
    }
   
   
    while( !feof(fpTest)    )
    {
        fgets ( line, MAXATTRLINELEN, fpTest );
        countRead++;
        length = strlen(line);
        printf("[%d]:%s(lineLength=%d) \n",countLine,line,length);
       
        if(length > 0)
        {
            countLine++;
        }
       
        // count countCodeDataLine
        if(length == 0) ;
        else if(length ==1)
        {
            //printf(" %d  %d %d %d %d",line[0], '\n', '\r' , '\r\n', '\n\r');
            if(line[0]==' ' || line[0] == '\n'  || line[0] == '\t' ) ;
            else
                countCodeDataLine++;
        }else
        {
            countCodeDataLine++;   
        }
       
        line[0] = '\0';
       

    }
   
   
    printf(" Read %d . Line  %d . Dataline  %d\n",countRead, countLine,countCodeDataLine);

    fclose ( fpTest );
   
}

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