Question

This program outputs a downwards facing arrow composed of a rectangle and a right triangle. The arrow dimensions are defined by user specified arrow base height, arrow base width, and arrow head width.
(1) Modify the given program to use a loop to output an arrow base of height arrowBaseHeight.
(2) Modify the given program to use a loop to output an arrow base of width arrowBaseWidth. Use a nested loop in which the inner loop draws the *’s, and the outer loop iterates a number of times equal to the height of the arrow base.
(3) Modify the given program to use a loop to output an arrow head of width arrowHeadWidth. Use a nested loop in which the inner loop draws the *’s, and the outer loop iterates a number of times equal to the height of the arrow head.
(4) Modify the given program to only accept an arrow head width that is larger than the arrow base width. Use a loop to continue prompting the user for an arrow head width until the value is larger than the arrow base width.
while (arrowHeadWidth <= arrowBaseWidth) { // Prompt user for a valid arrow head value }
Example output for arrowBaseHeight = 5, arrowBaseWidth = 2, and arrowHeadWidth = 4:
Enter arrow base height: 5 Enter arrow base width: 2 Enter arrow head width: 4
**
**
**
**
**
****
***
**
*
#include
int main(void) {
int arrowBaseHeight;
int arrowBaseWidth;
int arrowHeadWidth;
printf("Enter arrow base height:\n");
scanf("%d", &arrowBaseHeight);
printf("Enter arrow base width:\n");
scanf("%d", &arrowBaseWidth);
printf("Enter arrow head width:\n");
scanf("%d", &arrowHeadWidth);
printf("\n");
// Draw arrow base (height = 3, width = 2)
printf( "**\n");
printf( "**\n");
printf( "**\n");
// Draw arrow head (width = 4)
printf( "****\n");
printf( "***\n");
printf( "**\n");
printf( "*\n");
return 0;
}

Answer 1

Answer:

Follows are the modified code to this question:

#include <stdio.h>//defining a herader file

int main(void) //defining a main method

{

  int arrowBaseHeight = 0,arrowBaseWidth = 0,arrowHeadWidth = 0 ;//defining integer variable

  int i, j; //defining integer variable

  printf("Enter arrow base height:");//print message  

  scanf("%d", &arrowBaseHeight);//input value in arrowBaseHeight variable

  printf("Enter arrow base width:");//print message

  scanf("%d", &arrowBaseWidth);//input value  in arrowBaseWidth variable

  while (arrowHeadWidth <= arrowBaseWidth)//defining while loop to check arrowHeadWidth less then equal to arrowBaseWidth  

  {

      printf("Enter arrow head width:");//print message

      scanf("%d", &arrowHeadWidth);//input value in arrowHeadWidth variable

      printf("\n");//use for line spacing

  }

  // defining for loop for print vertical line of asterisk

  for (i = 0; i < arrowBaseHeight; i++)//defining for loop for print row  

  {

      for (j = 0; j < arrowBaseWidth; j++) //defining for loop for print column

      {

          printf("*");//print asterisk value

      }

      printf("\n");//use for line spacing

  }

//defining for loop for print reverse triangle

  for (i = arrowHeadWidth; i > 0; i--) //defining loop for input length  

  {

      for (j = i; j > 0; j--) //defining loop for triangle  

      {

          printf("*"); //print asterisk value

      }

      printf("\n");//use for line spacing

  }

  return 0;

}

Output:

please find attach file.

Explanation:

In the code, inside the method five integer variable "arrowBaseHeight, arrowBaseWidth, arrowHeadWidth, i, and j" is defined, in which the first three variables are used for input value from the user end, and "i and j" are used in the loop.

In the next step while loop is used for input the value, but in this code, mainly two for loop is used which can be defined as follows:

• In the first loop, it is used the "arrowBaseHeight and arrowBaseWidth" variable to print the vertical line of the asterisk.
• In the second loop, it uses the "arrowHeadWidth" variable to print the reverse triangle.