Member Avatar for passionated

(C language)

Hi.. Can anyone write a function to accept a character and display it 10 times??

Thanks in advance..

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  • Latest Post Latest Post by WaltP

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Generated

A few concise, practical points that fill gaps in the thread and give a safe, working pattern.

The original snippet mixes the wrong input/print formats and uses fflush(stdin) (undefined behavior). As recommended, a loop is the right approach; as and noted, the problem is the input/printing formats and how the input buffer is handled. Below are small, robust patterns you can drop into a program.

Simple, portable printer function (prints any char n times):

#include <stdio.h>

void repeat_char(char c, size_t n) {
    while (n--) putchar((unsigned char)c);
}

Two safe ways to get the character before calling repeat_char:

  • Quick scanf that skips whitespace: use a leading space in the format to ignore leftover newline.
  • Safer: read a whole line with fgets() and take the first character (avoids scanf quirks).

Example using fgets():

char buf[16];
if (fgets(buf, sizeof buf, stdin)) {
    repeat_char(buf[0], 10);
    putchar('\n');
}

Notes and cautions

  • Do not use fflush(stdin) to clear input; it’s undefined. If you must discard leftover input, loop on getchar() until '\n' or EOF.
  • When using getchar() store its result in an int so EOF can be detected.
  • Add a final '\n' for readable output and return a proper int from main.

This addresses the issues raised by ’s snippet and ties back to the loop suggestion from and the input/format warnings from and .

Recommended Answers

All 8 Replies

Member Avatar for zeroliken

Sorry but we don't write code here for you, that's the rule

So I'll give a suggestion instead to get you started
...create a loop in the function that will print out the character 10 times
if you have problems with the code then post it here

Edited by zeroliken because: n/a
Member Avatar for passionated

(C language)

Hi.. Can anyone write a function to accept a character and display it 10 times??

Thanks in advance..

#include<stdio.h>
main()
{
char a;
int i;
printf("\tEnter a character:\t");
scanf("%d", &a);
fflush(stdin);
for(i=0;i<10;i++)
{
printf("%s", &a);
}
}


Please correct the above program, it displays only once, i want it to display 10 times, what mistake have i done????

Member Avatar for WaltP

Use CODE Tags!!!

char a;            // define a character
scanf("%d", &a);   // read an INTEGER into the character
printf("%s", &a);  // print the character as a STRING

You tell Us what's wrong with the code...

Member Avatar for savoie

When you do "scanf("%c", &a);" you save only one character, so you can't use "printf("%s", &a);" to display the character saved in "a", if you execute this code, a segfault might append. To display the caracter in "a", you have to use "printf("%c", a);".

Member Avatar for WaltP

Hey passionated, you should only log in under one username. You should not use the savoie username too, especially in the same thread.

Member Avatar for savoie

Hey WaltP, I just tryed to help passionated, we are not the same user.

Member Avatar for WaltP

Maybe so, but I was asking passionated so he can learn something, not to have the questions answered by someone else so he doesn't have to think. Just sayin'.

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