Program to calculate the frequency of vowles in a given string in C code

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/* program to calculate the frequency of vowels in a given string*/

#include<stdio.h>

#include<conio.h>

main()

{

           int i,vow=0;

           char cstr[100];

           clrscr();

           printf(" enter the string of ur choice : ");

           gets(cstr);

           i=0;

           while(cstr[i]!='\0')

           {

                    if(cstr[i]=='a'||cstr[i]=='e'||cstr[i]=='i'||cstr[i]=='o'||cstr[i]=='u')

                   {

                    vow++;

                    }

                    else if(cstr[i]=='A'||cstr[i]=='E'||cstr[i]=='I'||cstr[i]=='O'||cstr[i]=='U')

                    {

                    vow++;

                    }

               i++;

           }

          printf(" \n the no of vowels are: %d",vow);

          getch();

}

       /*End of program*/

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