What does putchar function mean in C language

The putchar function represents the string output function in C language. The function of the putchar function is to output a single character on the terminal (display). Function syntax format: [int putchar(int ch)], where ch represents the character content to be output.

The putchar function is a character output function in C language. Its function is to output a single character on the terminal (display).

(Recommended tutorial: C Language Tutorial)

The function prototype is:

int putchar(int ch);

ch represents the character content to be output, and the return value is : If the output is successful, the ASC code of one character is returned. If the output fails, EOF or -1 is returned.

Example:

putchar(‘A’); /*输出大写字母A */
putchar(x);  /*输出字符变量x的值*/
putchar(‘\n’); /*换行*/

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