Number of Vowels & Consonants in a c pgm

Check if a given String is Palindrome

#include

#include

#include

void main()

{

    char string[25], reverse_string[25] = {'\0'};

    int  i, length = 0, flag = 0;

    fflush(stdin);

    clrscr();

    printf("Enter a string \n");

    gets(string);

    for (i = 0; string[i] != '\0'; i++)

    {

        length++;

    }

    for (i = length - 1; i >= 0; i--)

    {

       reverse_string[length - i - 1] = string[i];

    }

   

    for (i = 0; i < length; i++)

    {

        if (reverse_string[i] == string[i])

            flag = 1;

        else

            flag = 0;

    }

    if (flag == 1)

        printf("%s is a palindrome \n", string);

    else

        printf("%s is not a palindrome \n", string);

getch();

}

Output

Enter a string

sanfoundry

sanfoundry is not a palindrome

Enter a string

malayalam

malayalam is a palindrome

 

Read two Strings & Concatenate the Strings

#include 

#include 

#include 

void main()

{

    char string1[20], string2[20];

    int i, j, pos;

    clrscr();

    memset(string1, 0, 20);

    memset(string2, 0, 20);

    printf("Enter the first string : ");

    scanf("%s", string1);

    printf("Enter the second string: ");

    scanf("%s", string2);

    printf("First string  = %s\n", string1);

    printf("Second string = %s\n", string2);

    for (i = 0; string1[i] != '\0'; i++)

    {

        ;

    }

    pos = i;

    for (j = 0; string2[j] != '\0'; i++)

    {

        string1[i] = string2[j++];

    }

    string1[i] = '\0';

    printf("Concatenated string = %s\n", string1);

 getch();

}

Output

Enter the first string : Ammu

Enter the second string: Kutty

First string  = Ammu

Second string = Kutty

Concatenated string = Ammukutty

Replace Lowercase Characters by Uppercase & Vice-Versa

#include 

#include 

#include 

void main()

{

    char sentence[100];

    int count, ch, i;

    clrscr();

    printf("Enter a sentence \n");

    for (i = 0; (sentence[i] = getchar()) != '\n'; i++)

    {

        ;

    }

    sentence[i] = '\0';

    count = i;

    printf("The given sentence is   : %s", sentence);

    printf("\n Case changed sentence is: ");

    for (i = 0; i < count; i++)

    {

        ch = islower(sentence[i])? toupper(sentence[i]) :

tolower(sentence[i]);

        putchar(ch);

    }

getch();

}

Output

Enter a sentence

wELCOME tO sANFOUNDRY

The given sentence is   : wELCOME tO sANFOUNDRY

Case changed sentence is: Welcome To Sanfoundry

Count the Number of Vowels & Consonants in a Sentence

#include 

#include

void main()

{

    char sentence[80];

    int i, vowels = 0, consonants = 0, special = 0;

    clrscr();

    printf("Enter a sentence \n");

    gets(sentence);

    for (i = 0; sentence[i] != '\0'; i++)

    {

        if ((sentence[i] == 'a' || sentence[i] == 'e' || sentence[i] ==

        'i' || sentence[i] == 'o' || sentence[i] == 'u') ||

        (sentence[i] == 'A' || sentence[i] == 'E' || sentence[i] ==

        'I' || sentence[i] == 'O' || sentence[i] == 'U'))

        {

            vowels = vowels + 1;

        }

        else

        {

            consonants = consonants + 1;

        }

        if (sentence[i] =='t' ||sentence[i] =='\0' || sentence[i] ==' ')

        {

            special = special + 1;

        }

    }

    consonants = consonants - special;

    printf("No. of vowels in %s = %d\n", sentence, vowels);

    printf("No. of consonants in %s = %d\n", sentence, consonants);

getch();

}

Output

Enter a sentence

welcome to sanfoundry

No. of vowels in welcome to sanfoundry = 7

No. of consonants in welcome to sanfoundry = 12