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 program in C to display the such a pattern for n number of rows using a number which will start with the number 1 and the first and a last number of each row will be 1. 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:
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Next: Write a program in C to display the number in reverse order.
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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