Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
371 views
in Technique[技术] by (71.8m points)

c - Retrieving total line numbers in a file

can someone show me how to get the total number of lines in a text file in programming language C?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

This is one approach:

FILE* myfile = fopen("test.txt", "r");
int ch, number_of_lines = 0;

do 
{
    ch = fgetc(myfile);
    if(ch == '
')
        number_of_lines++;
} while (ch != EOF);

// last line doesn't end with a new line!
// but there has to be a line at least before the last line
if(ch != '
' && number_of_lines != 0) 
    number_of_lines++;

fclose(myfile);

printf("number of lines in test.txt = %d", number_of_lines);

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...