C-Program to know whether the character is vowel or not

#include<stdio.h>

int main()

{

  char c;

  printf("Enter a character to know whether it is vowel or not\n");

  scanf("%c",&c);

  if(c=='A'||c=='a'||c=='e'||c=='E'||c=='I'||c=='i'||c=='O'||c=='o'||c=='U'||c=='u')

    printf("The character %c is vowel\n",c);

  else

    printf("The character %c is not vowel\n",c);

return 0;

}

C-Program to Count number of vowels in a string

#include<stdio.h>

int main()

{

 char s[100];

 int i,count=0;

 printf("Enter a string to know how many vowels are there \n");

 scanf("%s",&s);

 for(i=0;s[i]!='\0';i++)

 {

   if(s[i]=='A'||s[i]=='a'||s[i]=='e'||s[i]=='E'||s[i]=='I'||s[i]=='i'||s[i]=='O'||s[i]=='o'||s[i]=='U'||s[i]=='u')

   {

     count++;

   }

 }

 if(count==0)

 {

    printf("No vowels are there \n");

 }

 else

 {

    printf("Number of vowels in %s is %d\n",s,count);

 }

return 0;

}

 

C-Program to count number of words in a sentence

#include<stdio.h>

#include<string.h>

int main()

{

    int i,word=1;

    char str[100];

    printf("Enter a string\n");

    gets(str);

    for(i=0;i<strlen(str);i++)

    {

        if(str[i]==' ')

        {

            word++;

        }

    }

    printf("%d\n",word);

  return 0;

}