C Exercises: Print the Floyd's Triangle

Last update on May 27 2022 12:24:45 (UTC/GMT +8 hours)

C For Loop: Exercise-22 with Solution

Write a program in C to print the Floyd's Triangle. The Floyd's triangle is as below :

Pictorial Presentation:

Sample Solution:

C Code:

#include <stdio.h>

void main()
{
   int i,j,n,p,q;
   printf("Input number of rows : ");
   scanf("%d",&n);
   for(i=1;i<=n;i++)
   {
     if(i%2==0)
     { p=1;q=0;}
     else
     { p=0;q=1;}
      for(j=1;j<=i;j++)
	 if(j%2==0)
	    printf("%d",p);
	 else
	    printf("%d",q);
     printf("\n");
   }
}

Sample Output:

Input number of rows : 5                                                                                      
1                                                                                                             
01                                                                                                            
101                                                                                                           
0101                                                                                                          
10101

Flowchart:

C Programming Code Editor:

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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