C语言实现读取文件中指定行号的内容

 966 static void readLineNumVal(unsigned char u8lineNum)
 967 {
 968     char c; 
 969     FILE *fp = NULL;
 970     unsigned int lineNum = 0;
 971     unsigned char i = 0, j = 0;
 972     char readNumVal[32] = {0};//存放要读取行的内容，由于本次操作需要读取的每一行都是32字节
 973 
 974     fp = fopen(FILE_PATH, "r+");
 975     while((c = getc(fp)) != EOF)
 976     {
 977         if('\n' == c)
 978         {
 979             lineNum++;
 980             if(lineNum > (u8lineNum + 3))//笔者是从文件的第三行开始读的，如果要从第一行开始的话，直接将3改为0即可
 981             {
 982                 goto stopReadfile;
 983             }
 984             continue;
 985         }
 986         if(lineNum == (u8lineNum + 3))
 987         {
 988             readNumVal[i++] = c;
 989             printf("%02c", c);
 990         }
 991     }
 992     stopReadfile: 
 993     fclose(fp); 
 994     fp = NULL;
 995 
 996     LOGINFO("\nnow is ready. lineNum = %d, i= %d\n", lineNum, i);
 997 

1008 
1009 }