Question

IN C

This assignment is to write a program that will prompt the user to enter a character, e.g., a percent sign (%), and then the number of percent signs (%) they want on a line. Your program should first read a character from the keyboard, excluding whitespaces; and then print a message indicating that the number must be in the range 1 to 79 (including both ends) if the user enters a number outside of that range. Your program should continue this behavior until you have received an appropriate integer. Use a loop to trap the user until you get the value that you want as you did in a previous assignment. You should also clear the keyboard buffer after each scanf so that the user can type characters or digits in their response. Once you have a number in the appropriate range, call a function that you write called draw_line that takes two arguments. One argument is the number of characters and the other argument is the character to draw. The function will use a for loop to draw that number of characters on the screen and then will print a newline.

Answer 1

#include<stdio.h>

#include <stdlib.h>

void draw_line(int v,char ch)                // draw_line function definition with two arguments- no. of characters and the chracter to draw

{

    int i;

    for(i=0;i<v;i++)

        printf("%c",ch );                     // for loop to draw the character desired number of times on the screen

    printf("\n");                             // printing the new line

}

int main(){                                  // main function definition

    char ch;

    int v;

    do{

        scanf("%c%d",&ch,&v);               // taking the character and the no. of character to draw as input from the user

        if(v<1||v>79)                      // checking whether the number is in the range or not

        {

            printf("The number must be in the range 1 to 79(both included) : ");     

            fflush(stdin);                  // clearing the keyboard buffer

            continue;

        }

        draw_line(v,ch);                    // calling the draw_line function

        break;                              // do-while loop breaks when we get the desired no.

    }while(1);

    return 0;

}