Bifalgorithm post · Computer science one · Binary Files

How can you read a text file one line at a time?

How can you read a text file one line at a time? (Computer science one · Binary Files) — "22. File I/O\n\n4 //read the first line\n\n5 char *s = fgets(line, 10…

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File I/O
Line-oriented reading uses fgets to retrieve data from an input file.
The first fgets call reads the first line into the line buffer.
The loop continues while fgets returns a non-NULL pointer.
The current buffer is processed during each loop iteration.
The trailing newline character is removed from line.
The example prints the current line.
After processing, fgets reads the next line.
When fgets returns NULL, line reading ends.
The alternative fgetc(FILE *stream) reads one character at a time.
fgetc returns the character as an int.

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How can you read a text file one line at a time?

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Computer science one

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sam23

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"22. File I/O\n\n4 //read the first line\n\n5 char *s = fgets(line, 1000, input);\n\n6 while(s != NULL) {\n\n7\n\n8 //chomp the endline character from line:\n\n9 line[strlen(line)-1] = '\\0';\n\n10\n\n11 //process the current buffer\n\n12 //for demonstration, we simply print it:\n\n13 printf(\"line = %s\n\n\", line);\n\n14\n\n15 //read the next line\n\n16 s = fgets(line, 1000, input);\n\n17 }\n\nA similar function, int fgetc(FILE *stream) allows us to get a single character from the input file (returned as an int ) if we prefer to read character by character."

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