C Exercises: Display the pattern in which the first and a last number of each row will be 1
C For Loop: Exercise-36 with Solution
Write a C program to display a such a pattern for n rows using a number that starts with 1 and each row will have a 1 as the first and last number.
The pattern is as follows:
1 121 12321
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
void main()
{
int i,j,n;
printf("Input number of rows : ");
scanf("%d",&n);
for(i=0;i<=n;i++)
{
/* print blank spaces */
for(j=1;j<=n-i;j++)
printf(" ");
/* Display number in ascending order upto middle*/
for(j=1;j<=i;j++)
printf("%d",j);
/* Display number in reverse order after middle */
for(j=i-1;j>=1;j--)
printf("%d",j);
printf("\n");
}
}
Sample Output:
Input number of rows : 5 1 121 12321 1234321 123454321
Flowchart:

C Programming Code Editor:
Improve this sample solution and post your code through Disqus.
Previous: Write a program in C to display the first n terms of Fibonacci series.
Next: Write a program in C to display the number in reverse order.
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C Programming: Tips of the Day
C Programming - What is the argument for printf that formats a long?
Put an l (lowercased letter L) directly before the specifier.
unsigned long n; long m; printf("%lu %ld", n, m);
Ref : https://bit.ly/3dIwfkP
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