Square Number Triangle

Q. Write a C program to print the following square number triangle as:

1

1 4 9

1 4 9 16 25

1 4 9 16 25 36 49

1 4 9 16 25 36 49 64 81

Ans.

/*c program for square number triangle*/

#include<stdio.h>

int main()

{

 int r,c,q=1;

 for(r=1; r<=5; r++,q=q+2)

 {

  for(c=1; c<=q; c++)

     printf(" %d",c*c);

  printf("\n");

 }

 getch();

 return 0;

}

/***********************************************************

The output of above program would be:

***********************************************************/

Figure: Screen shot for square number triangle C program

Related Program:

print the following number triangle C program:

1

1 2 3

1 2 3 4 5

1 2 3 4 5 6 7

1 2 3 4 5 6 7 8 9 

Number Pyramid Pattern

Q. Write a C program to print the following square number pyramid pattern as:

1  2  3  4  5

15 14 13 12

6  7  8

11 10

9

Ans.

/*c program for square number pyramid pattern*/

#include<stdio.h>

int main()

{

 int r,c,s1=1,s2=15;

 for(r=5; r>=1; r--)

 {
  if(r%2==0)
  {

    for(c=1; c<=r; c++,s2--)

       printf(" %d",s2);
  }

  else
  {
     for(c=1; c<=r; c++,s1++)

       printf(" %d",s1); 

  }

  printf("\n");

 }

 getch();

 return 0;

}

/**********************************************************

The output of above program would be:

*********************************************************/

Figure: Screen shot for square number pyramid C program

Number Triangle Pattern

Q. Write a C program to print the following number pattern as:

1

1 2 3

1 2 3 4 5

1 2 3 4 5 6 7

1 2 3 4 5 6 7 8 9

Ans.

/*c program for triangle number pattern*/

#include<stdio.h>

int main()

{

 int num,r,c,q=1;

 for(r=1; r<=5; r++,q=q+2)

 {

  for(c=1; c<=q; c++)
     printf(" %d",c);
  printf("\n");
 }
 getch();
 return 0;
}

/**********************************************************

The output of above program would be:

***********************************************************/

Figure: Screen shot for number triangle pattern C program

Related Programs:

print the following square number pattern as:

1

1 4 9

1 4 9 16 25

1 4 9 16 25 36 49

1 4 9 16 25 36 49 64 81

Equal Character Triangle

Q. Write a C program to print the following equal character triangle pattern as:

A
BAB
CBABC
DCBABCD
EDCBABCDE

Ans.

/*c program for Equal Character Triangle pattern*/
#include<stdio.h>
int main()
{

 char ch,r,c;
 printf("Enter Any Character : ");
 scanf("%c", &ch);
 if(ch>='a' && ch<='z')
    ch=ch-32;
 for(r='A'; r<=ch; r++)
 {
   for(c=r; c>='A'; c--)
      printf("%c",c);
   for(c='B'; c<=r; c++)
      printf("%c",c);
   printf("\n");
 }
 getch();
 return 0;
}

/*********************************************

The output of above program would be:

********************************************/

Figure: Screen shot for equal character triangle C program

Related Program:

Equal Number Triangle C program:

1
212
32123
4321234
543212345

Equal Number Triangle

Q. Write a C program to print the following equal number triangle pattern as:

1
212
32123
4321234
543212345

Ans.

/*c program for equal number triangle pattern*/
#include<stdio.h>
int main()
{

 int num,r,c;
 printf("Enter Any Number : ");
 scanf("%d", &num);
 for(r=1; r<=num; r++)
 {
   for(c=r; c>=1; c--)
      printf("%d",c);
   for(c=2; c<=r; c++)
      printf("%d",c);
   printf("\n");
 }
 getch();
 return 0;
}

/**********************************************************

The output of above program would be:

***********************************************************/

Figure: Screen shot for equal number triangle C program

Related Programs:

Equal Character Triangle as:

A
BAB
CBABC
DCBABCD

Character Pyramid

Q. Write a C program to takes the last character by user and print the following character pyramid as:
(if user input : j), then output would be like as:

A
ABA
ABCBA
ABCDCBA
ABCDEDCBA
ABCDEFEDCBA
ABCDEFGFEDCBA
ABCDEFGHGFEDCBA
ABCDEFGHJHGFEDCBA
ABCDEFGHGFEDCBA
ABCDEFGFEDCBA
ABCDEFEDCBA
ABCDEDCBA
ABCDCBA
ABCBA
ABA
A

Ans.

/*c program for character pyramid*/
#include<stdio.h>
int main()
{

 char ch,r,c,p;
 printf("Enter any character : ");
 scanf("%c", &ch);
 if(ch>='a' && ch<='z')
   ch=ch-32;
 for(r='A'; r<=ch; r++)
 {
   for(c='A'; c<=r; c++)
      printf("%c",c);
   for(c=r-1; c>='A'; c--)
      printf("%c",c);
   printf("\n");
 }
 for(p=ch-1,r='A'; r<ch; r++,p--)
 {
   for(c='A'; c<=p; c++)
      printf("%c",c);
   for(c=p-1; c>='A'; c--)
      printf("%c",c);
   printf("\n");
 }
 getch();
 return 0;
}

/*********************************************************

The output of above program would be:

*********************************************************/

Figure: Screen shot for character pyramid C program