stdio.h

The `#include ` directive includes the standard input/output (I/O) header file in your C program. The `stdio.h` header provides functions, macros, and types for input and output operations. Here are some of the commonly used functions provided by `stdio.h`: 1. Input Functions: - `scanf()`: Reads formatted input from the standard input (keyboard) or a specified stream. - `fscanf()`: Reads formatted input from a specified stream. - `getchar()`: Reads a single character from the standard input (keyboard). - `fgets()`: Reads a line of text from a specified stream. 2. Output Functions: - `printf()`: Writes formatted output to the standard output (console) or a specified stream. - `fprintf()`: Writes formatted output to a specified stream. - `putchar()`: Writes a single character to the standard output (console). - `puts()`: Writes a string followed by a newline character to the standard output (console). 3. File Operations: - `fopen()`: Opens a file and returns a file pointer. - `fclose()`: Closes a file. - `fread()`: Reads data from a file. - `fwrite()`: Writes data to a file. 4. File I/O Functions: - `fgetc()`: Reads a character from a specified file. - `fputc()`: Writes a character to a specified file. - `fgets()`: Reads a line of text from a specified file. - `fputs()`: Writes a string to a specified file. 5. Error Handling: - `perror()`: Prints a descriptive error message to the standard error (console) output. - `feof()`: Checks for the end-of-file indicator on a specified stream. These are just a few examples of the functions provided by `stdio.h`. The header file also includes additional macros, constants, and types related to file I/O and input/output operations. When you include `stdio.h` in your program, you gain access to these functions and can utilize them to perform input/output operations in your C program.

Comments

Post a Comment

Popular posts from this blog

string.h)

The `#include ` directive includes the string manipulation header file in your C program. The `string.h` header provides functions for manipulating strings and working with character arrays. Here are some commonly used functions provided by `string.h`: 1. String Manipulation: - `strcpy()`: Copies a string from source to destination. - `strcat()`: Concatenates (appends) one string to another. - `strlen()`: Calculates the length of a string. - `strcmp()`: Compares two strings lexicographically. - `strchr()`: Finds the first occurrence of a character in a string. - `strstr()`: Finds the first occurrence of a substring in a string. 2. Memory Operations: - `memset()`: Sets a block of memory with a particular value. - `memcpy()`: Copies a block of memory from source to destination. 3. String Conversion: - `atoi()`: Converts a string to an integer. - `atof()`: Converts a string to a floating-point number. 4. Tokenization: - `strtok()`: Breaks a string int...
Read more

stdlib.h

The `#include ` directive includes the standard library header file in your C program. The `stdlib.h` header provides functions, macros, and types for various general-purpose tasks in C. Here are some commonly used functions provided by `stdlib.h`: 1. Memory Management: - `malloc()`: Allocates a block of memory. - `calloc()`: Allocates and initializes a block of memory. - `realloc()`: Changes the size of a previously allocated block of memory. - `free()`: Deallocates a block of memory. 2. String Conversion and Pseudo-Random Numbers: - `atoi()`: Converts a string to an integer. - `atof()`: Converts a string to a floating-point number. - `rand()`: Generates a pseudo-random integer. - `srand()`: Seeds the random number generator. 3. Process and Environment Control: - `system()`: Executes a shell command. - `exit()`: Terminates the program execution. - `getenv()`: Retrieves the value of an environment variable. 4. Sorting and Searching: - `qsort()`:...
Read more