PROBLEM 29:

Write a C program to delete the all vowels from a user-entered string. You
are required to delete the vowels from the string. Just not printing them is not a valid answer.
Sample Input1:Hello World (String Length=11)
Sample Output1: Hll Wrld (String Length=8)
Sample Input2: Apple (String Length=5)
Sample Output2:ppl (String Length=3)


CODE:

#include<stdio.h>
main()
{
    // Variable declaration//
    char a[25];
    char b[25];
    int i,j=0;
     /*Input*/
   printf("Enter string:");
   gets(a);
     /* actual Working */
    for(i=0;a[i]!='\0';i++)//this loop will rununtil not equal to null
    {
        if(a[i]=='a' || a[i]=='e' || a[i]=='i' || a[i]=='o' || a[i]=='u')//if array index is equal to a or e or i or u or s then condition will run
        {
            a[i]='#';//here i replace array index value with #
        }
    }
    printf("After remove vowels\n");
    printf("Your string is:");
    for(i=0;a[i]!='\0';i++)
    {
        if(a[i]>='a' && a[i]<='z' || a[i]>='A'&& a[i]<='Z' || a[i]==' ')//this will cheak that array index greater than a and less than z
        {
        printf("%c",a[i]);//this will print if condition is true
    }
}
return 0;

}


Program Output:

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