SIRISHA SANAPATHI

24.12.19

example for Pyramid 1 program in c

#include<stdio.h>

void main()
{

int n,i,j;

printf("Enter a number");
scanf("%d",&n);

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

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

printf("%d",j);

printf("\n");

}

}

OUTPUT:
Enter a number 5
1
12
123
1234
12345

Generating random numbers program in c

#include<stdio.h>

void main()
{

int i,r;

randomize();

for(i=1;i<=10;i++)
{

r=random(100)

printf("%d\t",r);
}

}

OUTPUT:

82 86 72 23 45 48 88 85 48 21

NOTE:

a) random() takes a number and returns a random number in the range 0 to one less than the given number.
b) randomize() intializes the random number generator with a random value.

example for switch case program in c

#include<stdio.h>

void main()
{
char ch;

printf("Enter an alphabet:");
scanf("%c",&ch);

switch(ch)
{

case 'c' : printf("Chandigarh");
break;
case 'b' : printf("Baroda");
break;
case 'd' : printf("Dehradun");
break;
case 'v' : printf("Vizag");
break;
default: printf(" Guess where");

}

}

OUTPUT

Enter an alphabet c
Chandigarh

Logical operators(!!) program in c

#include<stdio.h>

void main()
{

char ch;

printf(" enter an alphabet");
scanf("%c",&ch);

if(ch=='a'!!ch=='e!!ch=='i'!!ch=='o'!!ch=='u')
printf("vowel");
else
printf("Consonant);

}

OUTPUT

enter an alphabet o
vowel

conditional operator(? :) program in c

#include<stdio.h>

void main()
{

int m;

printf("Enter marks ");
scanf("%d",&m);

(m>=35)?printf("passed):printf("Failed");

}

OUTPUT:

Enter marks 56
passed

Prime or not program in c

#include<stdio.h>

void main()
{

int i,n,count=0;

printf("Enter a number");
scanf("%d",&n);

for(i=1;i<=n;i++)
if(n%i==0)
count++;

if(count==2)

printf("prime");

else

printf(" not prime");

}

OUTPUT

Enter a number 3
prime

Reverse of number program in c

#include<stdio.h>

void main()
{

int n,r,rev=0;

printf("Enter a number");
scanf("%d",&n);

while(n!=0)
{

r=n%10;

rev=rev*10+r;

n=n/10;

}

printf("Reverse %d",rev);

}

Enter a number 786
Reverse 687

Generates that many multipication tables program in c

#include<stdio.h>

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

printf(" Enter a number ");
scanf("%d",&n);

printf("\t");
for(i=1;i<=n;i++)
printf("%5d",i);

printf("\n\n");

for(i=1;i<=5;i++)
{
printf("%d\t",i);
for(j=1;j<=n;j++)
{
printf("%5d",1*j);

}
printf("\n");

}

}

OUTPUT

Enter a number 5

1 2 3 4 5

1 1 2 3 4 5
2 2 4 6 8 10
3 3 6 9 12 15
4 4 8 12 16 20
5 5 10 15 20 25

example for nested loop program in c

#include<stdio.h>
{
int i,j;

for(i=1;i<=5;i++)
{
for(j=1;j<=3;j++)
{
printf("%d,%d\n",i,j);
}
}
}

OUTPUT
1,1
1,2
1,3
2,1
2,2
2,3
3,1
3,2
3,3
4,1
4,2
4,3
5,1
5,2
5,3

Generating multiplication table program in c

#include<stdio.h>

void main()
{
int n,i;

printf("Enter a number");
scanf("%d",&n);

for(i=0;i<=20;i++)
printf("%3d*%2d=%5d\n",n,i,n*i);

}

OUTPUT

9*1= 9
9*2= 18
9*1= 27
9*1= 36
9*1= 45
9*1= 54
9*1= 63
9*1= 72
9*1= 81
9*1= 90
9*1= 99
9*1= 108
9*1= 117
9*1= 126
9*1= 135
9*1= 144
9*1= 153
9*1= 162
9*1= 171
9*1= 180

To print all the even numbers (using for )b/w 1 to 10 program inc

#include<stdio.h>

void main()
{
int i;

for(i=0;i<=10;i++)
{

if(i%2==0)

printf("%d\t",i);

}
}

OUTPUT

2 4 6 8

Example of (multi way control structure) program in c

#include<stdio.h>

void main()
{

int m;

printf("Enter marks");
scanf("%d",&m);

if(m>=60)
printf("First class");

else if(m>=50)
printf("Second class");

else if(m>=35)
printf("Third class");

else
printf("Failed");

}

OUTPUT
Enter marks 46
Third class

Example of (if else) program in c

#include<stdio.h>

void main()
{

int n;

printf("Enter a number:");
scanf("%d",&n);

if(n%2==0)

printf("Even");

else

printf("Odd");

}

Example of (if) program in c

#include<stdio.h>

void main()
{

int n;

printf("Enter a number");
scanf("%d",&n);

printf("%d\n",n);

if(n==786)

printf("sanapathi");

}

OUTPUT:

Enter a number 786
sanapathi

Constant keyword program in c

If we want that the value of a variable is fixed & shold not be changed even accidentally, then such a variable is defined as const

#include<stdio.h>

void main()
{

const int a=512;

printf("%d",a);

}

OUTPUT:

512

sizeof keyword program in c

It is used to get the size of a variable or data type i.e., number of btes allocated.

#include<stdio.h>

void main()

{

int x;

char y;

float z;

printf("x=%d\n",sizeof(x));

printf("int =%d\n",sizeof(int));

printf("y=%d\n",sizeof(y));

printf("char =%d\n",sizeof(char));

printf("z=%d\n",sizeof(z));

printf("float =%d\n",sizeof(float));

}

OUTPUT:

x=2

int =2

y=1

char=1

z=4

float=4

Temperature value from centigrade to Fahrenheit prrogram in c

#include<stdio.h>
void main()
{
float cen,fah;
printf("Enter temperature in centigrade scale:");
scanf("%f",&cen);

fah=9/5.0*cen+32;

printf("Equivalent Fahrenheit scale value is %f",fah);

}

OUTPUT:

Enter temperature in centigrade scale: 27.5

Equivalent Fahrenheit scale value is 81.5

Palindrome of string program in c

#include<stdio.h>
#include<conio.h>
#include<string.h>

void main()
{
char str1[30],str2[30];
int n;
clrscr();
printf("Enter a string");
gets(str1);
strcpy(str2,str2);
strrev(str1);
n=strcmp(str,str);
if(n==0)
printf("\n The given string is palindrome");
else
printf("\n The given string is not a palindrome");
getch();
}

OUTPUT:

Enter a string mom

The given string is palindrome

Enter a string mad

The given string is not a palindrome

23.12.19

FInding largest and smallest number from a list program in c

#include<stdio.h>

void main()

{

int a[50],i,n,large,small;

printf("Enter the size of array");
scanf("%d",&n);

printf("Enter the elements into array to find largest and smallest number");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

large=small=a[0];

for(i=1;i<n;i++)
{
if(a[i]<small)

small=a[i];

}

printf(" The largest number is %d",large);
printf("The smallest number is %d",small);

}

OUTPUT

Enter the size of array 10
Enter the elements into array to find largest and smallest number 12 3 67 90 9 56 34 6 8 12
The largest number is 90
The smallest number is 3

Swapping of Numbers by call-by-value program in c

#include<stdio.h>

void main()

{
int a=100,b=200;

void swap(int,int);

printf("Before swap a=%d, b=%d",a,b);

swap(a,b);

}

void swap(int m,int n)
{
int temp ;

temp=m;
m=n;
n=temp;

printf("After swap a=%d,b=%d",m,n);
}

OUTPUT:

Before swap a=100 and b=200
After swap a=200 and b=100

Swapping of numbers using call-by-reference program in c

#include<stdio.h>

void main()

{

int a=10,b=50;

void swap(int *,int *);

clrscr();

printf("Before Swapping: %d %d\n",a,b);

swap(&a,&b);

printf("After Swapping: %d %d\n",a,b);

}

void swap(int *a,int *b)

{
int t;

t=*a;

*a=*b;

*b=t;

}

Output :

Before Swapping: 10 50

After Swapping: 50 10

Factorial ( Recursion Method) program in c

#include<stdio.h>

#include<conio.h>

int fact(int n)
{

int f;

if(n==0)

return 1;
else

f=n*fact(n-1);

return f;
}

void main()
{
int n,f;

clrscr();

printf("\n Enter the value of n");

scanf("%d",&n);

f=fact(n);

printf("\n Factorial of %d is %d ",n.f);

getch();

}

OUTPUT
Enter the value of n 5
Factorial of 5 is 120

Bubble Sort program in c

#include<stdio.h>
void main()
{
int n,c,d,swap,a[10];
printf("Input number of integers to sort:\n");
scanf("%d",&n);
printf("Enter %d integers:\n",n);
for(c=0;c<n;c++)
    scanf("%d",&a[c]);
for(c=0;c<(n-1);c++)
{
for(d=0;d<n-c-1;d++)
     {
      if(a[d]>a[d+1]) /* For descending order use < */
        {
          swap = a[d];
          a[d] = a[d+1];
          a[d+1] = swap;
        }
      }
}
    printf("Sorted list of numbers:\n");
    for(c=0;c<n;c++)
        printf("%d\n",a[c]);
}

Output:

Input number of integers to sort:
4
Enter 4 integers:
23
5
225
1
Sorted list of numbers:
1
5
23
225

Binary Search program in c

#include<stdio.h>

void main()

{

int n,i,l=0,h,m=0,f=0,sk,a[10];

printf("Enter number of elements: ");

scanf("%d",&n);

h=n-1;

printf("Enter %d integers :\n",n);

for(i=0;i<n;i++)

scanf("%d",&a[i]);

printf("Enter the search value: ");

scanf("%d",&sk);

while(l<=h)

{

m=(l+h)/2;

if(sk==a[m])

{

f=1;break;

}

else if(sk<a[m])

h=m-1;

else

l=m+1;

}

if(f==1)

printf("%d Found at Index %d",sk,m);

else

printf("Search Key Not Found");

}

Output 2:

Enter number of elements: 4

Enter 4 integers :

Enter the search value: 78

78 Found at Index 3

Output 3:

Enter number of elements: 4

Enter 4 integers :

354

567

2345

Enter the search value: 5

Search Key Not Found

Linear Search program in c

#include<stdio.h>

void main()

{

int a[10],i,e,n;

printf("Enter the size of array");

scanf("%d",&n);

printf("enter elements");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

printf("enter the elements to be search ");

scanf("%d",&e);

for(i=0;i<n;i++)

{
if(a[i]==e)

printf("The element is found");

break;

if(i==n)
printf(" The element not found");

}
}

OUTPUT:

1. Enter the size of array 7
enter elements 11
21
31
41
51
61
71
enter the elements to be search 51
The element is found

2. Enter the size of array 7
enter elements 11
21
31
41
51
61
71
enter the elements to be search 40
The element is not found

String Operations program in c

#include <stdio.h>

#include <string.h>

void main()

{

    char str1[30],str2[30];

    int choice,result=0;

    int len1=0,len2=0;

    printf("\n Enter First String : ");

    scanf("%[^\n]",str1);

    printf("\n Enter Second String : ");

    scanf("%s",str2);

    printf("\n Enter Your Choice : \n");

    printf("1. Copy Strings. \n");

    printf("2. Compare Strings. \n");

    printf("3. Concatenate Strings. \n");

    printf("4. Find Lengths. \n");

    printf("\n Enter Your Choice :");

    scanf("%d",&choice);

    switch(choice)

    {

       case 1 :

         {
        strcpy(str1,str2);

printf("\n %s %s \n",str1,str2);

        break;
         }

       case 2 :

         {

        result = strcmp(str2,str1);

        if(result == 0)

           printf("\n Both Strings are Same. ");

        else

           printf("\n Both are different strings.");

        break;

         }

       case 3 :

         {

        strcat(str1,str2);

        printf("\n %s %s \n",str1,str2);

        break;

         }

       case 4 :
         {

        len1 = strlen(str1);

        printf("\n Legth of First String is %d \n",len1);

        len2 = strlen(str2);

        printf("\n Legth of Second String is %d \n",len2);

        break;

         }

    default : printf("\n Wrong Choice .");

    }



}

Output1:
Enter First String : sana

Enter Second String : siri

Enter Your Choice :

1. Copy Strings.
2. Compare Strings.
3. Concatenate Strings.
4. Find Lengths.

Enter Your Choice :1
siri siri

Output 2:

Enter First String : sana

Enter Second String : siri

Enter Your Choice :

1. Copy Strings.
2. Compare Strings.
3. Concatenate Strings.
4. Find Lengths.
Enter Your Choice :2

Both are different strings.

Enter First String : sana
Enter Second String : sana

Enter Your Choice :
1. Copy Strings.
2. Compare Strings.
3. Concatenate Strings.
4. Find Lengths.

Enter Your Choice :2

Both Strings are Same.

Output 3:

Enter First String : siri

Enter Second String : sana

Enter Your Choice :

1. Copy Strings.
2. Compare Strings.
3. Concatenate Strings.
4. Find Lengths.

Enter Your Choice :3
sanasiri siri

Note : strcat() function string in position1 will be concatinated with string in position2

Output 4:

Enter First String : sana

Enter Second String : deepu

Enter Your Choice :
1. Copy Strings.
2. Compare Strings.
3. Concatenate Strings.
4. Find Lengths.

Enter Your Choice :4

Legth of First String is 4
Legth of Second String is 5