C library function – fgets() Description. The C library function char *fgets(char *str, int n, FILE *stream) reads a line from the specified stream and stores it into the string pointed to by str. It stops when either (n-1) characters are read, the newline character is read, or the end-of-file is reached, whichever comes first.
Why does fgets() return a null when reading a string?
If a read error occurs, the error indicator for the stream shall be set, fgets () shall return a null pointer, and shall set errno to indicate the error. This clearly indicates it’s only going to return a NULL if it’s actually at EOF when called, i.e. if any bytes are read, it won’t return NULL.
What is the declaration for fgets() function?
Following is the declaration for fgets () function. str − This is the pointer to an array of chars where the string read is stored. n − This is the maximum number of characters to be read (including the final null-character). Usually, the length of the array passed as str is used.
How to return value in another cell if a cell contains “Yes”?
For returning value in another cell if a cell contains only a specific text, please try the following formula. For example, if B5 contains “Yes”, then return “Approve” in D5, otherwise, return “No qualify”. Please do as follows. Select D5 and copy below formula into it and press the Enter key. See screenshot: 1.
How to read line terminators in a file using fgets?
[tline,ltout] = fgets ( ___) also returns the line terminators, if any, in ltout. Read a single line from a file, first excluding newline characters, and then including them. Use the following file. To read the first line from the file badpoem.txt, use fopen to open the file.
What is the difference between fgets and gets in Python?
Notice that fgets is quite different from gets: not only fgets accepts a stream argument, but also allows to specify the maximum size of str and includes in the string any ending newline character. Pointer to an array of char s where the string read is copied.
