Write a C program to print a Number pattern-26

#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=4;i++)
{
k=i;
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i)
{
printf("%d",k);
j<4?k--:k++;
}

else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Alphabet pattern-25

#include<stdio.h>
int main()
{
int i,j;
char ch;
for(i=1;i<=4;i++)
{
ch=64+i;
for(j=1;j<=4;j++)
{
if(j<=i)
{
printf("%c",ch);
ch--;
}

else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-24

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=7;i++)
{
for(j=1;j<=7;j++)
{
if((i==1 || i==7 || j==1 || j==7) || (i>=3 && i<=5 && j>=3 && j<=5) && (i==3 || i==5 || j==3 || j==5))
{
printf("*");
}

else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Number pattern-23

#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=5;i++)
{
k=1;
for(j=1;j<=6;j++)
{
if(j<=i+1)
{
printf("%d",k);
k=1-k;
}

else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a pattern-22

#include<stdio.h>
int main()
{
int i,j,k;
char ch;
for(i=1;i<=4;i++)
{
k=1;
ch='A';
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i)
{
if(j<=4)
{
printf("%d",k);
k++;
}
else
{
printf("%c",ch);
ch++;
}
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-21

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=4;i++)
{
for(j=1;j<=8;j++)
{
if(j>=5-i && j<=9-i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a pattern-20

#include<stdio.h>
int main()
{
int i,j,k=0;
char ch;
for(i=1;i<=4;i++)
{
ch='A';
k=1;
for(j=1;j<=8;j++)
{
if(j>=5-i && j<=4+i)
{
if(j<=4)
{
printf("%c",ch);
ch++;
}
else
{
printf("%d",k);
k++;
}

}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print an alphabet pattern-19

#include<stdio.h>
int main()
{
int i,j;
char ch;
for(i=1;i<=4;i++)
{
ch='A';
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i)
{
printf("%c",ch);
j<4?ch++:ch--;
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-18

#include<stdio.h>
int main()
{
int i,j,k=0;
for(i=1;i<=9;i++)
{
i<6?k++:k--;
for(j=1;j<=9;j++)
{
if(j<=6-k || j>=4+k)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-17

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=7;i++)
{
for(j=1;j<=7;j++)
{
if(j==i || j==8-i)
{
if(i==8-j)
printf("/");
else
printf("\\");
}
else
{
printf("*");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Number pattern-16

#include<stdio.h>
int main()
{
int i,j,k=0,x;
for(i=1;i<=9;i++)
{
i<=5?k++:k--;
x=1;
for(j=1;j<=5;j++)
{
if(j>=6-k)
{
printf("%d",x);
x++;
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Number pattern-15

#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=7;i++)
{
k=7-i;
for(j=1;j<=7;j++)
{
if(j<=8-i)
{
printf("%d",k);
k--;
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Number pattern-14

#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=4;i++)
{
k=i;
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i)
{
printf("%d",k);
j<4?k++:k--;
}
else{

printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-13

#include<stdio.h>
int main()
{
int i,j,k=0,rows;
printf("Enter the number of rows\n");
scanf("%d",&rows);
for(i=1;i<=rows;i++)
{
i<=(rows+1)/2?k++:k--;
for(j=1;j<=(rows+1)/2;j++)
{

if(j<=k)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");

}
return 0;
}

Write a c program to print a Diamond pattern-12

#include<stdio.h>
int main()
{
int i,j,k=0,num,n;
printf("Enter no of rows\n");
scanf("%d",&num);
n=(num+1)/2;
for(i=1;i<=num;i++)
{
i<=n?k++:k--;
for(j=1;j<=num;j++)
{
if(j>=n+1-k && j<=n-1+k)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a character pattern-11

#include<stdio.h>
int main()
{
int i,j;
char ch;
for(i=1;i<=4;i++)
{
ch='A';
for(j=1;j<=7;j++)
{
if(j<=5-i || j>=3+i)
{
printf("%c",ch);
j<4?ch++:ch--;
}
else
{
printf(" ");
if(j==4)
ch--;
}
}
printf("\n");
}
return 0;
}

Write a c program to print a number pattern-10

#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=4;i++)
{
k=1;
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i)
{
printf("%d",k);
j<4?k++:k--;
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-9

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=9;j++)
{
if(j<=6-i || j>=4+i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-8

*  *  *  *

  *  *  *  

    *  *

      *

#include<stdio.h>

int main()

{

int i,j,k;

for(i=1;i<=4;i++)

{

k=1;

for(j=1;j<=7;j++)

{

if(j>=i && j<=8-i && k)

{

printf("*");

k=0;

}

else

{

printf(" ");

    k=1;

}

}

printf("\n");

}

return 0;

}

Write a c program to print a star pattern-7

      *
    *  *
  *  *  *
*  *  *  *
#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=4;i++)
{
k=1;
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i && k)
{
printf("*");
k=0;
}
else
{
printf(" ");
 k=1;
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-6

* * * * * * * 
   * * * * *
      * * *
         *

#include<stdio.h>

int main()

{

int i,j;

for(i=1;i<=4;i++)

{

for(j=1;j<=7;j++)

{

if(j>=i && j<=8-i)

{

printf("*");

}

else

{

printf(" ");

}

}

printf("\n");

}

return 0;

}

Write a c program to print a triangle shaped star pattern-5

         *
      * * *
   * * * * *
* * * * * * *
#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=4;i++)
{
for(j=1;j<=7;j++)
{
if(j>=5-i && j<=3+i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-4

* * * * * 
* * * * 
* * *
* * 
*
#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=5;j++)
{
if(j<=6-i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a star pattern-3

            *
         * *
      * * *
   * * * *
* * * * *

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=5;j++)
{
if(j>=6-i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Star pattern-2

* * * * *
   * * * *
      * * *
         * *
            *


#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=5;j++)
{
if(j>=i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to print a Right angle star pattern

*
* *
* * *
* * * *
* * * * *

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=5;j++)
{
if(j<=i)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}

Write a c program to calculate the value of a raised to b using function pow(a,b)

#include<stdio.h>
#include<math.h>
int main()
{
int s;
float a,b;
printf("Enter the value of a\n");
printf("Enter the value of b\n");
scanf("%f",&a);
scanf("%f",&b);
s=pow(a,b);
printf("power=%d",s);
return 0;
}

Write a program in c to check whether a number is Even or Odd.

#include<stdio.h>
int main()
{
int n;
printf("Enter a number\n");
scanf("%d",&n);
if(n%2==0)
{
printf("Even number");
}
else
{
printf("Odd number");
}
return 0;
}

Write a program in c to check whether a number is prime number or not.

#include<stdio.h>
int main()
{
int num,i,flag=0;
printf("Enter a number\n");
scanf("%d",&num);
for(i=2;i<=num/2;i++)
{
if(num%i==0)
{
printf("Not a prime number");
flag=1;
break;
}
}
if(flag==0)
{
printf("prime number");
}
return 0;
}

Write a program in c to calculate the sum of digits.

#include<stdio.h>
int main()
{
int num,r,sum=0;
printf("Enter a number\n");
scanf("%d",&num);
while(num>0)
{
r=num%10;
sum=sum+r;
num=num/10;
}
printf("Sum of digits=%d",sum);
return 0;
}

Write a program in c to check whether a number is armstrong or not.

#include<stdio.h>
int main()
{
int num,temp,r,sum=0;
printf("Enter a number\n");
scanf("%d",&num);
temp=num;
while(num>0)
{
r=num%10;
sum=sum+(r*r*r);
num=num/10;
}
if(sum==temp)
{
printf("Armstrong Number");
}
else
{
printf("Not an Armstrong Number");
}
return 0;
}

Write a program in c to check whether a number is palindrome or not.

#include<stdio.h>
int main()
{
int num,temp,r,sum=0;
printf("Enter a number\n");
scanf("%d",&num);
temp=num;
while(num>0)
{
r=num%10;
sum=sum*10+r;
num=num/10;
}
if(sum==temp)
{
printf("Palindrome Number");
}
else
{
printf("Not a palindrome Number");
}
return 0;
}

Write a program in c to enter a number and reverse it.

#include<stdio.h>
int main()
{
int num,rev,r,sum=0;
printf("Enter a number\n");
scanf("%d",&num);
while(num>0)
{
r=num%10;
sum=sum*10+r;
num=num/10;
}
printf("Reverse=%d",sum);
return 0;
}

Write a program in c to calculate the area and perimeter of a rectangle.

#include<stdio.h>
int main()
{
int l,b;
float area,peri;
printf("Enter the length of rectangle\n");
printf("Enter the length of rectangle\n");
scanf("%d",&l);
scanf("%d",&b);
area=l*b;
peri=2*(l+b);
printf("Area=%f\n",area);
printf("Perimeter=%f",peri);
return 0;
}

Write a program in c to calculate the simple interest.

#include<stdio.h>
int main()
{
int p,t;
float r,si;
printf("Enter the principle\n");
printf("Enter the rate\n");
printf("Enter the time\n");
scanf("%d",&p);
scanf("%f",&r);
scanf("%d",&t);
si=(p*r*t)/100;
printf("simple interest=%f",si);
return 0;

}

Write a program in c to find the factorial of a given number.

#include<stdio.h>
int main()
{
int i,n,f=1;
printf("Enter the number\n");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
f=f*i;
}
printf("factorial=%d",f);
return 0;
}

Write A Program In c To Check Whether A Number is a Perfect number or not.

#include<stdio.h>
int main()
{
int i,n,sum=0;
printf("Enter a number\n");
scanf("%d",&n);
for(i=1;i<n;i++)
{
if(n%i==0)
{
sum=sum+i;
}
}
if(sum==n)
{
printf("perfect number");
}
else
{
printf("Not a perfect number");
}
return 0;
}