I know everybody has told me to use fgets and not gets because of buffer overflow. However, I am a bit confused about the third parameter in fgets(). As I understand it, fgets is dependent on: char * fgets ( char * str, int num, FILE * stream ); char* str is the ptr to where my input will be stored. num is the max number of character to be read.

Jul 10, 2015 · Second, when using fgets(), the result is slightly wrong because apparently fgets() function reads newline (ASCII value 10) character last which screws up the result. Third, when using scanf() function, the result is completely wrong because first character apparently has a -52 ASCII value. For this, I have no explanation.

Feb 26, 2014 · @johngonidelis a string is stored as a series of the ascii value of the characters, with a single character at the end with the binary value '0'. strlen() only counts the actual letters, but when you lay out space for your own string, you …

Aug 9, 2009 · Another clear difference is the return value: fgets return a pointer to dest on success; scanf return the number of input items successefully matched and assigned. Then, the scanf function scans input according to format , and reads input from the standard input stream stdin , while fgets reads input from FILE * stream as default.

Feb 10, 2014 · fgets() reads in at most one less than size characters from stream and stores them into the buffer pointed to by s. Reading stops after an EOF or a newline. If a newline is read, it is stored into the buffer.

fgets is a function, read is a system call; fgets is standard C, read is not; fgets is stdio buffered, read is not; fgets works with a FILE *, read works with a file descriptor; fgets reads until newline, read reads how much you tell it to

The fgets function reads at most one less than the number of characters specified by n from the stream pointed to by stream into the array pointed to by s. No additional characters are read after a new-line character (which is retained) or after end-of-file.

fgets(input, 8, stdin); which doesn't reflect the real size of memory, input points to. This might "work" as long as the input is shorter than eight bytes, but will truncate the input, if it is larger. Furthermore, you will get the rest of the input the next time you call fgets.

Jan 28, 2017 · I'm new at programming so there are some basics and maybe common sense that I don't know. I have a question about how to use fgets right. Based on the explanation of fgets, it seems that fgets should stop whenever it reads n-1 characters, hit the EOF or hit a newline character. For example, I create a text file like below:

May 14, 2015 · The actual space taken up will only be the length of the text read by fgets. Something like: char str[1000]; fgets(str, 1000, &file); If the next line only has 10 characters before the newline, then str will hold those 10 characters, the newline, and the null terminator.