fclose c<\/a>loses a stream whose file pointer is passed as argument. If a call to fclose is successful it returns zero, otherwise EOF is returned.<\/p>\nC Program to Close a File using fclose Function<\/h3>\n
The following program shows the use of\u00a0fclose function<\/strong>\u00a0to close a file(stream) after writing a sentence in it.<\/p>\n![\"C](\"https:\/\/btechgeeks.com\/wp-content\/uploads\/2021\/07\/C-Program-to-Close-a-File-using-fclose-Function.png\")
<\/p>\n
#include <stdio.h>\r\n \r\nint main (){\r\n FILE * pFile;\r\n \r\n \/* Creates a new file *\/\r\n pFile = fopen (\"TextFile.txt\",\"w\");\r\n \/* Write a sentence in a file *\/\r\n fprintf (pFile, \"fclose C standard library function\");\r\n \/* Close a file *\/\r\n fclose (pFile);\r\n \r\n return 0;\r\n}<\/pre>\nOutput<\/p>\n
fclose C standard library function\r\n<\/pre>\nReading from a File in C<\/h3>\n
The stdio.h standard library provides a number of functions to read data from a stream.
\nFunctions to read a single character from a file<\/p>\n
\n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n |
\n\n| fgetc()<\/td>\n | Reads a character from the given stream.<\/td>\n<\/tr>\n |
\n| getc()<\/td>\n | Reads a single character from given stream.<\/td>\n<\/tr>\n |
\n| getchar()<\/td>\n | Reads a single character from stdin stream.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Functions to Read a String from a File<\/p>\n \n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n | \n\n| fgets()<\/td>\n | Reads a line from given stream and stores it into a character array.<\/td>\n<\/tr>\n | \n| gets()<\/td>\n | Reads a line from stdin and stores it into given character array.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Functions to Read Formatted Data from a File<\/p>\n \n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n | \n\n| fscanf()<\/td>\n | Read formatted data from given stream.<\/td>\n<\/tr>\n | \n| scanf()<\/td>\n | Reads formatted data from stdin.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nC Program to read formatted data from a file using fscanf function<\/h3>\nThe following program shows the use of\u00a0fscanf function<\/b>\u00a0to read formatted data from a stream.<\/p>\n ![\"C](\"https:\/\/btechgeeks.com\/wp-content\/uploads\/2021\/07\/C-Program-to-read-formatted-data-from-a-file-using-fscanf-function.png\") <\/p>\n
#include <stdio.h>\r\n \r\nint main()\r\n{\r\n char string[50];\r\n int val;\r\n float fval;\r\n FILE *file;\r\n \r\n file = fopen (\"textFile.txt\", \"w+\");\r\n fprintf(file, \"%d %f %s\", 5, 5.5, \"TechCrashCourse.com\");\r\n rewind(file);\r\n \r\n fscanf(file, \"%d %f %s\", &val, &fval, string);\r\n \r\n printf(\"Integer : %d\\n\", val);\r\n printf(\"Floating point number : %f\\n\", fval);\r\n printf(\"String : %s\\n\", string);\r\n \r\n fclose(file);\r\n return(0);\r\n}<\/pre>\nOutput<\/p>\n Integer : 5\r\nFloating point number : 5.500000\r\nString : TechCrashCourse.com\r\n<\/pre>\nWriting to a File in C<\/h3>\nThe stdio.h standard library provides a number of functions to write data on a stream.<\/p>\n Functions to write a single character on a file<\/p>\n \n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n | \n\n| fputc()<\/td>\n | Writes a character to the given stream.<\/td>\n<\/tr>\n | \n| putc()<\/td>\n | Writes a character to the given stream.<\/td>\n<\/tr>\n | \n| putchar()<\/td>\n | Writes a character to stdout stream.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Functions to write a string on a file<\/p>\n \n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n | \n\n| fputs()<\/td>\n | Writes a string to the given stream excluding the null terminating character.<\/td>\n<\/tr>\n | \n| puts()<\/td>\n | Writes a string to stdout stream excluding null terminating character.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Functions to write formatted data on a file<\/p>\n \n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n | \n\n| fprintf()<\/td>\n | Writes formatted output to a stream.<\/td>\n<\/tr>\n | \n| printf()<\/td>\n | Print formatted data to stdout.<\/td>\n<\/tr>\n | \n| vfprintf()<\/td>\n | Writes formatted data to a stream using an argument list.<\/td>\n<\/tr>\n | \n| vprintf()<\/td>\n | Print formatted data to stdout using an argument list.<\/td>\n<\/tr>\n | \n| vsprintf()<\/td>\n | Writes formatted data to a string using an argument list.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nC Program to write formatted data on a file<\/h3>\n![\"C](\"https:\/\/btechgeeks.com\/wp-content\/uploads\/2021\/07\/C-Program-to-write-formatted-data-on-a-file.png\") <\/p>\n
#include <stdio.h>\r\n \r\nint main (){\r\n int c, counter = 0;\r\n FILE *file;\r\n char *string = \"fprintf C Standard Library function\";\r\n \r\n \/* Create a temporary file *\/\r\n file = fopen(\"textFile.txt\", \"w\");\r\n fprintf(file, \"%s\", string);\r\n fclose(file);\r\n \r\n \/* Opening textFile.txt and printing it's content *\/\r\n file = fopen(\"textFile.txt\", \"r\");\r\n while(!feof(file)){\r\n c = fgetc(file);\r\n printf(\"%c\", c);\r\n }\r\n \r\n return(0);\r\n}<\/pre>\nOutput<\/p>\n fprintf C Standard Library function\r\n<\/pre>\nStandard Library function for File Handling in C<\/h3>\nThere are many file handling functions defined in stdio.h header file. Here is the list of frequently used file handling functions:<\/p>\n \n\n\n| Function<\/th>\n | Description<\/th>\n<\/tr>\n<\/thead>\n | \n\n| clearerr()<\/td>\n | Clears error indicators associated with a given stream.<\/td>\n<\/tr>\n | \n| fclose()<\/td>\n | Closes the stream and flushes buffers associated with the given stream.<\/td>\n<\/tr>\n | \n| feof()<\/td>\n | Checks the end-of-file indicator of the given stream.<\/td>\n<\/tr>\n | \n| ferror()<\/td>\n | Checks the error indicator of the given stream.<\/td>\n<\/tr>\n | \n| fflush()<\/td>\n | Flushes the content of the given stream.<\/td>\n<\/tr>\n | \n| fgetc()<\/td>\n | Gets the next character from the given stream.<\/td>\n<\/tr>\n | \n| fgetpos()<\/td>\n | Gets current position of the given stream.<\/td>\n<\/tr>\n | \n| fgets()<\/td>\n | Reads a line from given stream and stores it into a character array.<\/td>\n<\/tr>\n | \n| fopen()<\/td>\n | Opens a file in the given mode.<\/td>\n<\/tr>\n | \n| fprintf()<\/td>\n | Writes formatted output to a stream.<\/td>\n<\/tr>\n | \n| fputc()<\/td>\n | Writes a character to the given stream.<\/td>\n<\/tr>\n | \n| fputs()<\/td>\n | Writes a string to the given stream excluding the null terminating character.<\/td>\n<\/tr>\n | \n| fread()<\/td>\n | Reads data from the given stream and stores it into an array.<\/td>\n<\/tr>\n | \n| freopen()<\/td>\n | Reopens a stream with different file or mode.<\/td>\n<\/tr>\n | \n| fscanf()<\/td>\n | Read formatted data from given stream.<\/td>\n<\/tr>\n | \n| fseek()<\/td>\n | Changes the position indicator of the given stream.<\/td>\n<\/tr>\n | \n| fsetpos()<\/td>\n | Sets the position indicator of the given stream.<\/td>\n<\/tr>\n | \n| ftell()<\/td>\n | Returns the current position of the given stream.<\/td>\n<\/tr>\n | \n| fwrite()<\/td>\n | Writes data from an array to the given stream.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":" File in C programming language, can be anything from a disk file to a device. C language provide support for opening a file, closing a file, reading data from a file and writing data to a file through a set of standard library functions. C file handling is designed to work with a number of … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":14666,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[26],"tags":[],"yoast_head":"\nFile Input Output in C Programming - BTech Geeks<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/btechgeeks.com\/c-programming-file-handling-input-output\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"File Input Output in C Programming - BTech Geeks\" \/>\n<meta property=\"og:description\" content=\"File in C programming language, can be anything from a disk file to a device. 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