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How do i open and read text files?
- Thread starter marianna
- Start date
Try this code:<br><br>#include <iostream.h><br>#include <fstream.h><br><br>void main()<br>{<br> char line[81];<br><br> ifstream in_file("your_text_file_path"
;<br> while (in_file) {<br> in_file.getline(line, 81); <br> // here you put any special processing to line which holds the current line of the text file<br> } <br>}<br><br>This is the easy way using file streams. What is left to do is to make a function to calculate the number of characters.<br>The other way is a bit more difficult:<br><br>#include <stdio.h><br>#include <ctype.h><br><br>int main()<br>{<br> int c;<br> FILE *fp;<br> unsigned int count = 0; // number of characters<br><br> // I miss the if file exist check and error handling stuff<br> fp = fopen("your_file_name", "r" // r - for reading, w - for writing, etc. (see MSDN help)<br> while ((c = fgetc(fp)) != EOF) {<br> count++;<br> }<br> fclose(fp);<br> printf("Characters in file: %d\n", count);<br> return 0;<br>}<br><br>The last example will count all the characters in the file. You can easily fit it to your own needs. Anyway I recommend you use the first method which is C++ specific. Hope this helps! ;-)<br><br>Regards...dex
;<br> while (in_file) {<br> in_file.getline(line, 81); <br> // here you put any special processing to line which holds the current line of the text file<br> } <br>}<br><br>This is the easy way using file streams. What is left to do is to make a function to calculate the number of characters.<br>The other way is a bit more difficult:<br><br>#include <stdio.h><br>#include <ctype.h><br><br>int main()<br>{<br> int c;<br> FILE *fp;<br> unsigned int count = 0; // number of characters<br><br> // I miss the if file exist check and error handling stuff<br> fp = fopen("your_file_name", "r" // r - for reading, w - for writing, etc. (see MSDN help)<br> while ((c = fgetc(fp)) != EOF) {<br> count++;<br> }<br> fclose(fp);<br> printf("Characters in file: %d\n", count);<br> return 0;<br>}<br><br>The last example will count all the characters in the file. You can easily fit it to your own needs. Anyway I recommend you use the first method which is C++ specific. Hope this helps! ;-)<br><br>Regards...dex Dear dex,<br><br>The question was posted in January and marianna has not logged on to tek-tips since February. It is very unlikely that she is still interested in this subject.<br><br>"But, that's just my opinion... I could be wrong".<br>-pete
reyalfonso
Programmer
but other people may have the same question.
thanks dex!
thanks dex!
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