Odd and Even Number Pattern Program In C

Q. Write a Odd and Even number pattern in C language as following:

    1
    2 4 6
    1 3 5 7 9
    2 4 6 8 10 12 14
    1 3 5 7  9 11 13 15 17

Ans.

/* even odd number pattern program in c*/
#include<stdio.h>
int main()
{

Character Pattern Program In C

Q. Write a character pattern program in C as following:

    ABCDEDCBA
    ABCDCBA
    ABCBA
    ABA
    A

Ans.

Before we start to source code of above character pattern program, if you look carefully on above character pattern, there are 2 character pattern shows as:

    ABCDEDCBA
    ABCDCBA
    ABCBA
    ABA
    A

so just make above 2 character pattern and merge them, you are done. Cheers!!
Let's start the coding in C.

/*character pattern program in C*/
#include<stdio.h>
int main()
{
  char r,c,ch,h;
  printf("Enter any charactr : ");
  scanf("%c", &ch);
  if(ch>='a' && ch<='z')
     ch=ch-32;

Perfect Number In C Using Function

Q. Write a C program to identify the user entered number is perfect number or not.

Ans.

/* perfect number in c using function program */
#include<stdio.h>
int perfect(int  );
int main()
{

Number Pattern In C

Q. Write the following number pattern program in C language as:

    123454321
    1234321
    12321
    121
    1

Ans.

Before we start to write the source code of above number pattern program, if you look carefully on above pattern, there are 2 number pattern shows as: