C Simple pro

Generate all the prime numbers between 1 and n

#include

#include

void main()
{
int no,counter,counter1,check;
clrscr();
printf(“<———————–Prime no. series————————>”);
printf(“\n\n\n\t\t\tInput the value of n: “);
scanf(“%d”,&no);
printf(“\n\nThe prime no. series b/w 1 to %d : \n\n”,no);

for(counter = 1; counter <= no; counter++)
{
check = 0;
for(counter1 = counter-1; counter1 > 1 ; counter1–)
if(counter%counter1 == 0)
{
check++;
break;
}
if(check == 0)
printf(“%d\t”,counter);
}
getch();
}

Find the sum of individual digits of a positive integer

#include

#include

void main()

{

int num, k=1, sum=0;

clrscr();

printf(“Enter the number whose digits are to be added:”);

scanf(“%d”,&num);

while(num!=0)

{

k=num%10;

sum=sum+k;

k=num/10;

num=k;

}

printf(“Sum of the digits:%d”,sum);

getch();

}

Write a c program to find prime numbers

#include

#include

void main()
{
int i,j=2,ch=0;
clrscr();
printf("\nEnter any number");
scanf("%d",&i);
while(j<=i/2)
{
if(i%j==0)
{
printf("%d Is not prime",i);
ch=1;
break;
}
else
{
j++;
}
}
if(ch==0)
{
printf("%d Is prime",i);
}
}

Find both the largest and smallest number in a list of integers

#include

#include

void main( )

{

float largest(float a[ ], int n);

float value[4] = {2.5,-4.75,1.2,3.67};

printf(“%f\n”, largest(value,4));

}

float largest(float a[], int n)

{

int i;

float max;

max = a[0];

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

if(max < a[i])

max = a[i];

return(max);

}

Whether the given no. is palindrome or not

#include
#include
  void main()
  {
   int n,r,t,sum=0;
   clrscr();
   printf("    Output:\n");
   printf("\tEnter a no.");
   scanf("%d",&n);
   t=n;
   while(n!=0)
          {
          r=n%10;
          sum=sum*10+r;
          n=n/10;
          }
   if(sum==t)
   printf("\tThe no. %d is a pallindrome",t);
   else
   printf("\tThe no. %d is not a pallindrome",t);
   getch();
  }

Whether the given no.is armstrong or not

 #include
  #include
  void main()
   {
    int n,r,t,sum=0;
    clrscr();
    printf("  Output :\n");
    printf("\tEnter a no.");
    scanf("%d",&n);
    t=n;
    while(n!=0)
          {
          r=n%10;
          sum=sum+r*r*r;
          n=n/10;
          }
   if(sum==t)
   printf("The no. %d is armstrong",t);
   else
   printf("The no. %d is not an armstrong",t);
   getch();
  }