Tag: getchar

C language uses the getchar method to clear the input buffer and the use of the fgets function

The processing speed of the computer CPU is very fast. The speed of our keyboard input is not as fast as the processing speed of the CPU. The CPU has to wait for the keyboard input to be completed, which is a waste of resources. Improve efficiency. getchar: Function declaration: int getchar(void); Character input function, […]

Standard IO_file reading and writing_fgetc, getchar, ungetc, fgets, fputs, fread, fwrite

Directory 1. Single-character file reading and writing 1.1 Single character read file 1.1.1 fgetc function 1.1.2 getc function 1.1.3 getchar function 1.1.4 ungetc function 1.1.5 Comprehensive sample code for reading single-character files 1.2 Single-character write file 1.2.1 fputc function 1.2.2 putc function 1.2.3 putchar function 1.2.4 Comprehensive sample code for single-character write file 2. Multi-character […]

[C Language] Use of getchar() function and scanf() function

Article directory getchar() buffer zone what is buffer Why set up a buffer buffer type Correct use of getchar function scanf() scanf(“input control character”, input parameters); scanf(“input control character/non-input control character”, input parameters) Precautions for using scanf() Summary scanf() getchar() getchar int getchar(void) Corresponding header file: Function description: Get a character from the buffer. Return […]

[Elementary C Language] Learn to use the library functions getchar and putchar

Directory One, getchar function 1. Function: 2. Recognize functions 3. use Two, putchar function 1. Function 2. Definition 3. use 3. The use of getchar and putchar Fourth, the application of getchar 1. getchar function 1. Function: The function of this function is to receive a character, and then convert the character to the corresponding […]

getchar, putchar, and input buffers

Directory 1. Literature of getchar and putchar 1.1 Literature on getchar: 1.2 Literature on putchar 1.3 Return value problem 2. Enter a character from the keyboard 2.1 Principle 2.2 How to understand: ? Understanding 1: ? Understanding 2: 2.3 About how the program ends 3. Enter password 3.1 Calling getchar once to read is equivalent […]

vue+gin–GetcharZp

vue + gin–GetcharZp vue + gin – GetcharZp P1-Project Introduction【03:51】 P2-Project combing [29:59] problem user category submit P3-Environment Construction 【05:27】 go env Initialize go mod init tidy go mod tidy gorm the gin P4 – Integration of GIN and GORM [16:20] the gin router/app.go service/ping.go gorm install mysql mysql test models/init.go models/problem.go service/problem.go router/app.go P5-Integrating […]

[C Language] Use of getchar() and scanf()

getchar() getchar int getchar(void) Corresponding header file: Function description: Get a character from the buffer. Return value: If the read is successful, the ASCII value of the character is returned. If the read fails, EOF is returned, and the corresponding integer value is -1. If standard input is at end-of-file, the function returns EOF and […]

scanf and getchar working kernel

scanf return value problem scanf has a return value, which returns the number of data read, and returns EOF if the read fails. EOF: end of file end of file flag, its value is -1 (you can try it yourself) ok Go directly to the code proof #include <stdio.h> int main() { int a = […]