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Q. What is a standard library function to read 1 char at a time?

  • (A) putchar()
  • (B) printf()
  • (C) getchar()
  • (D) write()
  • Correct Answer - Option(C)
  • Views: 21
  • Filed under category C Programming
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Explanation by: Admin

In C language, getchar() is a standard library function used to read a single character from the standard input (keyboard).

Usage of getchar()

#include <stdio.h>



int main() {

    char ch;

    printf("Enter a character: ");

    ch = getchar();  // Reads a single character

    printf("You entered: %c

", ch);

    return 0;

}

Why Not the Other Options?

  • (A) putchar() → Outputs (prints) a single character, does not read.
  • (B) printf() → Prints formatted output, does not read characters.
  • (D) write() → A low-level system call, not a standard library function for character input.

Thus, (C) getchar() is the correct answer!

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