Using this starter code:  #include //function prototypes void PrintLine(int length, char theChar); void PrintRectangle(int width, int height, char theChar); void PrintTriangle(int baseLength, char theChar); void PrintInvertedTriangle(int height, char theChar); int main(void) {     char choice;     int a, b;        char character;        //asking for user input     printf("Which shape (L-line, T-triangle, R-rectangle, I-inverted triangle): \n");     scanf(" %c", &choice);     printf("Which character: \n");     scanf(" %c", &character);     switch (choice) {        //if user input is for a triangle     case 'T':     case 't':     printf("Enter an integer base length between 3 and 25: \n");     scanf("%d", &a);     if (a >= 3 && a <= 25)        PrintTriangle(a, character);     else     printf("Length not in range.");     break;     //if user input is for a rectangle     case 'R':     case 'r':     printf("Enter an integer width and height between 2 and 25: \n");     scanf("%d%d",&a, &b);     if((a<2 || a>25 )){         printf("Width not in range.");         break;         }        if((b<2||b>25)){         printf("Height not in range.");         break;         }         if(a >= 2&&a<=25 && b>=2&&b<=25)         PrintRectangle(a, b, character);         break;     //if user input is a line     case 'L':     case 'l':     printf("Enter an integer length between 1 and 25: \n");     scanf("%d", &a);     if (a >= 1 && a <= 25)        PrintLine(a, character);     else     printf("Length not in range.");     break;     //if user input is an inverted triangle     case 'i':     case 'I':     printf("Enter an integer base length between 2 and 25: \n");     scanf("%d", &a);     if (a >= 2 && a <= 25)        PrintInvertedTriangle(a, character);     else     printf("Height not in range.");     break;     //if user input isn't a line, rectagnle, triangle or inverted triangle     default:     printf("Unknown shape.\n");     break;     }     }     //line function     void PrintLine(int length, char theChar)     {         int i;         for (i = 0; i < length; i++)         printf("%c", theChar);         printf("\n");     }     //triangle function     void PrintTriangle(int baseLength, char theChar)     {         int i, j;         for (i = 1; i <= baseLength; i++)         {             for (j = 0; j < i; j++)             printf("%c", theChar);             printf("\n");         }     }     //rectangle function     void PrintRectangle(int width, int height, char theChar)     {         int i, j;         for (i = 0; i < height; i++)         {             for (j = 0; j < width; j++)             printf("%c", theChar);             printf("\n");             }         }     //inverted triangle function     void PrintInvertedTriangle(int height, char theChar)     {         int i;         for (i = height; i > 0; i--)         {             PrintLine(i, theChar);            }     }

Using this starter code: 

#include <stdio.h>

//function prototypes
void PrintLine(int length, char theChar);
void PrintRectangle(int width, int height, char theChar);
void PrintTriangle(int baseLength, char theChar);
void PrintInvertedTriangle(int height, char theChar);

int main(void)

{

    char choice;
    int a, b;   
    char character;   

    //asking for user input
    printf("Which shape (L-line, T-triangle, R-rectangle, I-inverted triangle): \n");
    scanf(" %c", &choice);
    printf("Which character: \n");
    scanf(" %c", &character);
    switch (choice)
{
  
    //if user input is for a triangle
    case 'T':
    case 't':
    printf("Enter an integer base length between 3 and 25: \n");
    scanf("%d", &a);
    if (a >= 3 && a <= 25)   
    PrintTriangle(a, character);
    else
    printf("Length not in range.");
    break;

    //if user input is for a rectangle
    case 'R':
    case 'r':
    printf("Enter an integer width and height between 2 and 25: \n");
    scanf("%d%d",&a, &b);
    if((a<2 || a>25 )){
        printf("Width not in range.");
        break;
        }
  
    if((b<2||b>25)){
        printf("Height not in range.");
        break;
        }
        if(a >= 2&&a<=25 && b>=2&&b<=25)
        PrintRectangle(a, b, character);
        break;

    //if user input is a line
    case 'L':
    case 'l':
    printf("Enter an integer length between 1 and 25: \n");
    scanf("%d", &a);
    if (a >= 1 && a <= 25)   
    PrintLine(a, character);
    else
    printf("Length not in range.");
    break;

    //if user input is an inverted triangle
    case 'i':
    case 'I':
    printf("Enter an integer base length between 2 and 25: \n");
    scanf("%d", &a);
    if (a >= 2 && a <= 25)   
    PrintInvertedTriangle(a, character);
    else
    printf("Height not in range.");
    break;

    //if user input isn't a line, rectagnle, triangle or inverted triangle
    default:
    printf("Unknown shape.\n");
    break;
    }
    }

    //line function
    void PrintLine(int length, char theChar)
    {
        int i;
        for (i = 0; i < length; i++)
        printf("%c", theChar);
        printf("\n");
    }

    //triangle function
    void PrintTriangle(int baseLength, char theChar)
    {
        int i, j;
        for (i = 1; i <= baseLength; i++)
        {
            for (j = 0; j < i; j++)
            printf("%c", theChar);
            printf("\n");
        }
    }

    //rectangle function
    void PrintRectangle(int width, int height, char theChar)
    {
        int i, j;
        for (i = 0; i < height; i++)
        {
            for (j = 0; j < width; j++)
            printf("%c", theChar);
            printf("\n");
            }
        }

    //inverted triangle function
    void PrintInvertedTriangle(int height, char theChar)
    {
        int i;
        for (i = height; i > 0; i--)
        {
            PrintLine(i, theChar);
  
        }
    }

Answer this prompt in C programming: