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1  PROGRAM TO FIND THE VOWELS AND CONSONANTS IN THE STRING.

#include<stdio.h>
#include<string.h>
int main()
{
    int c=0,v=0,n,j,flag;
    char s[100];
    printf("enter the character : ");
    gets(s);
    for(j=0; s[j]!='\0'; j++)
        if(s[j]=='a'||s[j]=='A'||s[j]=='e'||s[j]=='E'||s[j]=='i'||s[j]=='I'||s[j]=='o'||s[j]=='O'||s[j]=='u'||s[j]=='U')
        {
            v++;
        }
        else
        {
            c++;
        }
    n=strlen(s);
    printf("total size=%d",n);
    printf("\nvowels=%d",v);
    printf("\nconsonants=%d",c);
    return 0 ;
}

OUTPUT :

enter the character : I love doing coding

total size=19
vowels=7
consonants=12

Program to compare two strings without using strcmp(library function)...

#include<stdio.h>
#include<string.h>
int main()
{
    int i=0,l,k,j;
    char s1[100],s2[100];
    printf("enter string 1 :");
    fgets(s1,sizeof s1,stdin );
    printf("enter string 2 :");
    fgets(s2,sizeof s2,stdin );
    l=strlen(s1);
    k=strlen(s2);
    printf("%d\n%d\n",l-1,k-1);
    if(l!=k)
        printf("not equal string!!");
    else
    {
        while(s1[i]<=l&&s2[i]<=k);
        {
            if(s1[i]==s2[i])
                j=1;
        }
        i++;
        if(j==1)
            printf("equal string");
        else
            printf("not equal string!");
    }
    return 0 ;
}

OUTPUT :

enter string 1 :coderash5.blogspot.com
enter string 2 :coderash5.blogspot.com
22
22
equal string

Program to count string elements  without any library function:

#include <bits\stdc++.h>
using namespace std;
int main()
{
    int count = 0; //initialising count with 0
    char str[80];
    cout << "enter the string: " << endl;
    fgets(str, sizeof str, stdin);
    while (str[count] != '\0')
    {
        count++; //counting elements of string
    }
    cout << "s_length of the string is : " << count - 1;
    return 0;
}

Program to count total numbers of words in string:]

Word : coderash 5 blogspot .com
count : 4
LOGIC = If spaces or '\n(new line) or '\t' (tab) comes count it 

#include <bits\stdc++.h>
using namespace std;
int main()
{
    int word=1, i; // initialising word with 0
    char str[100] ;
    cout << "enter the string: " << endl;
    fgets(str, sizeof str, stdin);
    for(str[i]=0;str[i]<sizeof str;str[i++])
    {
        if (str[i] == ' ' || str[i] == '\n' || str[i] == '\t') //logic given above
        {
            word++;
        }
    }
    cout << "total num are: " << word - 1;
    return 0;
}

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