Input from user:
Enter the number: 5
Expected output:
1
123
12345
1234567
123456789
Input from user:
Enter the number:
5
Expected output:
12345
1234
123
12
1
1. Accept input number from user declare variable say no.
2. Run outer for loop from 1 to no which shows rows in pattern:
for(i=1;i<=no;i++)
3. Run inner for loop from 1 to (no+1)-i which shows columns in pattern:
for(j=1;j<=(no+1)-i;j++)
4. Inside the inner loop print value of j :
printf("%d",j);
5. For next row print \n.
#include<stdio.h>
void main()
{
int i,j,no;
printf("Enter the number:\n");
scanf("%d",&no);
/*Run outer loop from 1 to no*/
for(i=1;i<=no;i++)
{
/*Run inner loop from 1 to (no+1)-i*/
for(j=1;j<=(no+1)-i;j++)
{
/*Print value of j*/ printf("%d",j);
}
/*For next row*/ printf("\n");
}
}
Above program shows the following output:
Input from user:
Enter the number:
5
Expected output:
12345
1234
123
12
1
1. Accept input number from user declare variable say no.
2. Run outer for loop from 1 to no which shows number of rows:
for(i=1;i<=no;i++)
3. Run inner for loop from 1 to i-1 to print spaces:
for(j=1;j<i;j++)
{
printf(" ");
}
4. Run another one inner for loop from 1 to (no+1)-i to print star:
for(k=1;k<=(no+1)-i;k++)
{
printf("%d",k);
}
5. For next row print \n.
#include<stdio.h>
void main()
{
int i,j,k,no;
printf("Enter the number:\n");
scanf("%d",&no);
/*Run loops*/
for(i=1;i<=no;i++)
{
/* Print spaces from second row, in incremented manner*/
for(j=1;j<i;j++)
{
printf(" ");
}
/* Print numbers in decremented manner*/
for(k=1;k<=(no+1)-i;k++)
{
printf("%d",k);
}
/* For next row*/
printf("\n");
}
}
Above program shows the following output:
Input from user:
Enter the number: 5
Expected output:
1
12
123
1234
12345
This pattern is same as previous exercises star pattern:
*
**
***
****
*****
Difference is:
In this pattern we only need to replace the * with value of k .
1. Accept input number from user declare variable say no.
2. Run outer loop from 1 to no which shows the number of rows in pattern:
for(i=1;i<=no;i++)
3. Run first inner loop from i to no-1 to print spaces:
for(j=i;j<no;j++)
{
printf(" ");
}
4. Run second inner loop from 1 to i and print value of k:
for(k=1;k<=i;k++)
{
printf("%d",k);
}
5. For next row print \n.
#include<stdio.h>
void main()
{
int no,i,j,k;
printf("Enter the number:\n");
scanf("%d",&no);
/*Run loops*/
for(i=1;i<=no;i++)
{
for(j=i;j<no;j++)
{
/*Print spaces*/
printf(" ");
}
for(k=1;k<=i;k++)
{
/*Print value of k*/
printf("%d",k);
}
/*For new row*/ printf("\n");
}
}
Above program shows the following output:
Input from user:
Enter the number: 5
Expected output:
1
12
123
1234
12345
This pattern is same as previous exercises star pattern:
*
**
***
****
*****
Difference is:
In this pattern we only need to replace the * with value of j .
1. Accept input number from user declare variable say no.
2. Run outer for loop from 1 to no which shows rows in pattern:
for(i=1;i<=no;i++)
3. Run inner for loop from 1 to i which shows columns in pattern:
for(j=1;j<=i;j++)
4. Inside the inner loop print value of j :
printf("%d",j);
5. For next row print \n.
#include<stdio.h>
void main()
{
int no,i,j;
printf("Enter the number: ");
scanf("%d",&no);
/*Run outer loop from 1 to no*/
for(i=1;i<=no;i++)
{
for(j=1;j<=i;j++)
{
/*Print value of j*/ printf("%d",j);
}
/*For new row*/ printf("\n");
}
}
Above program shows the following output:
Input from user:
Enter the number: 5
Expected output:
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
Input from user:
Enter the number: 5
Expected output:
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
This pattern is same as previous exercises star pyramid pattern:
*
**
***
****
*****
Difference is:
In this pattern we only need to replace the * with value of k .
1. Accept input number from user.
2. Run outer for loop from 1 to no which shows rows in pattern:
for(i=1;i<=no;i++)
3. Run inner for loop from i to no-1 to print spaces:
for(j=i;j<no;j++)
{
printf(" ");
}
4. Run another inner for loop from 1 to i which shows columns in pattern:
for(k=1;k<=i;k++)
5. Inside the second inner for loop print value of k with one space:
printf("%d ",k);
6. After that outside the block of inner for loop print next line \n for print new row.
#include<stdio.h>
void main()
{
int no,i,j,k;
printf("Enter the number:");
scanf("%d",&no);
for(i=1;i<=no;i++)
{
for(j=i;j<no;j++)
{
/*Print spaces*/
printf(" ");
}
for(k=1;k<=i;k++)
{
/*print value of k with one space...to print it like a pyramid*/
printf("%d ",k);
}
/*For next row*/
printf("\n");
}
}
Above program shows the following output:
Ex: Write a C program to print hollow square number pattern with diagonal. How to write a C program to print hollow square number pattern with diagonal. C program to print hollow square number pattern with diagonal.
Input from user:
Enter the number: 9
Expected output:
To understand this pattern, first you need to understand previous exercises hollow square number pattern.
1. Accept input number from user declare variable say no.
2. Run outer loop from 1 to no, which shows rows in pattern.
3.
Run inner loop from 1 to no
to print columns in pattern.
4. Inside the inner loop using if statement give conditions to print number:
if(i==1||i==no||j==1||j==no||j==ic||j==dc)
5. Otherwise print spaces.
6. Outside the block of inner for loop, print newline \n.
#include<stdio.h>
void main()
{
int no,i,j;
int ic=1,dc;
printf("Enter the number:");
scanf("%d",&no);
dc=no;
for(i=1;i<=no;i++)
{
for(j=1;j<=no;j++)
{
/*Give conditions to print value of j*/ if(i==1||i==no||j==1||j==no||j==ic||j==dc)
{
printf("%d",j);
}
else
{
/*To print spaces*/
printf(" ");
}
}
ic++;
dc--;
/*for next row*/
printf("\n");
}
}
Above program shows the following output:
Ex: Write a C program to print square number pattern 4. How to write a C program to print square number pattern 4. C program to print square number pattern 4.
Input from user:
Enter the number: 5
Expected output:
1 2 3 4 5
2 3 4 5 6
3 4 5 6 7
4 5 6 7 8
5 6 7 8 9
Step by step logic of the given program:
1. Accept input number from user declare variable say no.
2. Make N=no.
3. Run outer for loop from 1 to no, for print rows:
for(i=1;i<=no;i++)
4. Run inner for loop from z to N, to print values in incremented manner:
for(j=z;j<=N;j++)
5. Inside the inner loop print value of j with one space.
6. After that, outside the block of inner loop print new line \n [for next row].
#include<stdio.h>
void main()
{
int i,j,no;
int N,z=1;
printf("Enter the number:");
scanf("%d",&no);
N=no;
for(i=1;i<=no;i++)
{
for(j=z;j<=N;j++)
{
/*print j with 1 space to print it like a square*/ printf("%d ",j);
}
/*increment z and N by 1*/
z++;
N++;
printf("\n");
}
}
Above program shows the following output:
Ex: Write a C program to print square number pattern 3. How to write a C program to print square number pattern 3. C program to print square number pattern 3.
Input from user:
Enter the number: 5
Expected output:
12345
12345
12345
12345
12345
Given pattern is same as previous square number pattern 2:
11111
22222
33333
44444
55555
Difference is:
In this pattern we only need to replace the value of i with value of j .
Program:
#include<stdio.h>
void main()
{
int no;
int i,j;
printf("Enter the number:");
scanf("%d",&no);
/*Loop to print rows */
for(i=1;i<=no;i++)
{
/*Loop to print columns */
for(j=1;j<=no;j++)
{
/*print value of j*/
printf("%d",j);
}
/*for new line*/
printf("\n");
}
}
Above program shows the following output:
