Output:
Exer5




#include

#include

void main(){

int a, b, c;

int choice;

clrscr();

printf("\n Enter a number: ");

scanf("%d", &a);

printf("\n\t\t[A] - Pattern 1\n\n");

printf("\t\t[B] - Pattern 2\n\n");

printf("\t\t[C] - Pattern 3\n\n");

printf("\t\t[D] - Pattern 4\n\n");

printf("Select your choice: ");

scanf("%s",&choice);

switch (choice){

case 'A':

printf("\n ");for(b=1; b<=a; b++){

for(c=1; c<=b; c++)printf("*");

printf("\n ");}

break;

case 'B':

printf("\n ");

for(c=a; c>=1; c--){

for(b=1; b<=c; b++)

printf("*");

printf("\n ");}

break;

case 'C':

printf("\n ");

for(b=1; b<=a; b++){

for(c=1; c<=(a-b); c++)

printf(" ");for(c=1; c<=b; c++)

printf("*");printf("\n ");}

break;

case 'D':

printf("\n ");

for(int b=a-1; b>=0; b--){

for(int c=b; cprintf(" ");

for(int d=0; d<=b; d++)

printf("*");printf("\n ");}

break;

default:

clrscr();

printf("\n\n\n\n\t\t\tYour choice is not available!\n\n\n\n\t\t\tTry again later...!!!");}

getch();

}