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putchar()
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What is the putchar() function in C++?

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In C++, the putchar() function writes a character to stdout.

Syntax

The putchar() function takes an integer argument to write it to stdout. The integer is converted to unsigned char and written to the file.

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Upon success, the putchar() function returns the character represented by ch; upon failure, the function returns EOF and sets the error indicator on stdout.

putchar() is defined in the <cstdio> header file.

Code

The example below outputs characters equivalent to the integer values ranging from 657565-75 (i.e., the first ten uppercase letters):​

#include <iostream>
using namespace std;
#include <cstdio>
int main()
{
for (int i=65; i<75; i++)
{
/* Writes the equivalent character */
putchar(i);
putchar(' ');
}
return 0;
}

RELATED TAGS

putchar()
c++
function
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Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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