Program to Count the vowels in a String in C | Programmerdouts

Practice Program

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Program to Count the vowels in a String.

Solution:

#include<stdio.h>
void main()
{
    int i,count=0;
    char s[20];

    printf("Enter the string: ");
    gets(s);

    printf("String is:");
    puts(s);

    for(i=0;s[i] != '\0';i++)
    {
         switch(s[i])//switching the character.
        { //if character is a,e,i,o,u
    case 'a':
    case 'e':
    case 'i':
    case 'o':
    case 'u':
        count++;
    }


}
printf("There are %d vowels in ",count);
    puts(s);

}

Output1

Enter the string: Computer

String is : Computer
There are 3 vowels in Computer

Output2

Enter the string: Programmer

String is : Programmer
There are 3 vowels in Programmer

Output3

Enter the string: hello

String is : hello
There are 2 vowels in hello

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defining a function 'count_vowels' which will return number of vowels in String

int count_vowels(char s[])
{
    int i,count=0;

    for(i=0;s[i] != '\0';i++)
    {
        switch(s[i])
        {
    case 'a':
    case 'e':
    case 'i':
    case 'o':
    case 'u':
        count++;

        }


    }
    return count;
}

Using above define function 'count_vowels()':

void main()
{
    int result;


    result = count_vowels("Computer");

    printf("There are %d vowels",result);
}

Output1

There are 3 vowels

Using above define function 'count_vowels()':

void main()
{
    int result;


    result = count_vowels("Programmer");

    printf("There are %d vowels",result);
}

Output2

There are 3 vowels

Using above define function 'count_vowels()'

void main()
{
    int result;


    result = count_vowels("hello");

    printf("There are %d vowels",result);
}

Output3

There are 2 vowels

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