Patterns

42. WRITE A C PROGRAM TO PRINT RIGHT TRIANGLE STAR PATTERN

/*C program to print right triangle star pattern*/
*
**
***
****
*****

/* C program to print right triangle star pattern series*/

#include <stdio.h>

int main()
{
int i, j, n;

//Reads the number of rows to be printed from user
printf("Enter value of n: ");
scanf("%d", &n);

for(i=1; i<=n; i++)
{
//Print i number of stars
for(j=1; j<=i; j++)
{
printf("*");
}

//Move to next line/row
printf("\n");
}

return 0;
}
output
Enter the value of n: 5 
*
**
***
****
*****

43. WRITE A C PROGRAM TO PRINT THE GIVEN NUMBER PATTERN

55555
4444
333
22
1/*C program to print the given number pattern*/
#include <stdio.h>
int main()
{
int i, j, N;
printf("Enter N: ");
scanf("%d", &N);

for(i=N; i>=1; i--)
{
for(j=1; j<=i; j++)
{
printf("%d", i);
}

printf("\n");
}

return 0;

}
output
Enter N: 5
55555
4444
333
22
1

44. WRITE A C PROGRAM TO PRINT THE GIVEN NUMBER PATTERN

54321
4321
321
21
1/*C program to print the given number pattern*/
#include<stdio.h>
#include<conio.h>
void main()
{
int i, j;
clrscr();
for(i=5;i>=1;i--)
{
for(j=5;j>=1;j--)
{
if(j>i)
printf(" ");
else
printf("%d",j);
}
printf("\n");
}
getch();
}
output
54321
4321
321
21
1

45. WRITE A C PROGRAM TO PRINT THE GIVEN NUMBER PATTERN

    1    
   21    
  321  
 4321  
54321/*C program to print the given number pattern*/
#include<stdio.h>#include<conio.h>
int main()
{
int i,j,k;
for(i=1;i<=5;i++)
{
for(j=5;j>=1;j--)
{
if(j<=i)
printf("%d",j);
else
printf(" ");
} 
printf("\n");
}
return 0;
}
output
         1
        21
       321
      4321
     54321

46. WRITE A C PROGRAM TO PRINT THE GIVEN PATTERN

   1  
  121  
 12321
1234321 
/*program to print in a given format*/
#include<stdio.h>
#include<conio.h>
int main()
{
int i,j,k,n,k,l;
clrscr();
printf(“enter the value of n”);
scanf(“%d”,&n);
for(i=1;i<=n;i++) 
{
for(j=1;j<=n-1;j++)
{
printf(“ ”);
}
for(k=1;k<=i;k++) 
{
printf”(%d”,k);
}
for(l=i-1;l>=I;l--)
{
printf(“%d”,l);
}
printf(“\n”);
}
getch();
return 0;
}
output
enter the value of n 4 
      1
    121
  12321
1234321 

47. WRITE A C PROGRAM TO PRINT EQUILATERAL TRIANGLE (PYRAMID) STAR PATTERN

    * 
   ***
  *****
 *******
*********
/* C program to print equilateral triangle or pyramid star pattern*/
#include <stdio.h>int main()
{
int i, j, n;

//Reads number of rows to be printed
printf("Enter value of n : ");
scanf("%d", &n);

for(i=1; i<=n; i++)
{ 
//Prints trailing spaces
for(j=i; j<n; j++)
{
printf(" ");
}

//Prints the pyramid pattern
for(j=1; j<=(2*i-1); j++)
{
printf("*");
}

printf("\n");
}

return 0;
}
output
Enter value of n: 5    
    *
   ***
  *****
 *******
*********