[問題] Text Input/Output 的幾個問題

看板C_and_CPP (C/C++)作者gnawnoraa (成語)時間16年前 (2009/08/20 11:50)推噓0(0推 0噓 1→)

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目前我學到這裡~ 關於開讀檔的方法, 有r, w, a三種mode (其他還沒在書上看到) 昨天再寫書後面的習題遇到幾個問題: 1. 如果我要對一個file多次使用fgetc時是不是用完一次fgetc就必須fclose再fopen 不然會造成第二次讀的時候就直接讀到EOF? 昨天試的時候是這樣, 不過不知道對不對因為我在想要用很多次fgetc, 一直fopen, fclose 很麻煩 2. Q1: write a function that deletes the last line of any file Q2: write a program to delete the sixth line in a file 類似這樣的問題, 像問題2, 如果是copy 1~5 & 7~last到另一個file 然後再write回去, 這樣我會但要是只能使用original file, 不能用其他file 就不知道要怎麼辦了... 3. 剩下的是我不知道題目的意思我看得懂字面上的意思, 整個題意還是不懂 (1) Write a function that accepts a file of varying-length lines and changes it to a formatted file with 60 characters in each line. (2) Write a program to parse words onto separate lines; that is, locate and write each word to its own line. Words are defined as one or more characters seperated by whiltspace. (3) Write a function that writes the multiples of "num" between "lowLimit" and "highLimit" to a text file. Assume that lowLimit < highLimit and that "num" is not equal to zero. Then write a test driver to validate your function. ----------- 抱歉...我的問題有點多... 雖然原文寫的很詳細...不過也時候真的看不懂意思請大家多多幫忙了^^ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.120.193.39