7. (B) String operations for string reverse, string comparison,

7. (B) String operations for string reverse, string comparison,

	#include<iostream.h> #include<conio.h>
	int find_length(char string[])
	{
	int len=0,i;
	for(i=0; string[i]!='\0';i++)
	{
	len++;
	}
	return len;
	}
	// comparision string
	int compare_strings(char string1[],char string2[])
	{
	int len1,len2,i,count=0;
	len1=find_length(string1);
	len2=find_length(string2);
	if(len1!=len2)
	return 1;
	for(i=0;i<len1;i++)
	{
	if(string1[i]==string2[i])
	count++;
	}
	if(count==len1)
	return 0;
	return 1;
	}
	//reverse strings
	void main()
	{
	clrscr();
	char str[50],string1[20],string2[20];
	char rev[50];
	int i=0,j=0;
	cout<<"Enter any string to be reversed:";
	cin>>str;
	while(str[i]!='\0')
	{
	i++;
	}
	i--;
	while(i>=0)
	{
	rev[j]=str[i];
	j++;
	i--;
	}
	rev[j]='\0';
	cout<<"Reverse string is:"<<rev;
	cout<<"\n Enter two strings:";
	cin>>string1>>string2;
	if(compare_strings(string1,string2)==0)
	{
	cout<<"\n They are equal";
	}
	else
	{
	cout<<"\n They are not equal";
	}
	getch();
	}