#include <string.h>
#include <conio.h>
#include <stdio.h>
void main()
{
int i,j,len=0;
char str[50];
clrscr();
printf("\nEnter a String : " );
gets(str);
for(i=0;str[i]!='\0';i++)
{
len++;
}
printf("\n============ String Length ========== \n");
printf("\n String '%s' and the Length is %d ",str,len);
getch();
}
Output :
Enter a String : this is a test length
============ String Length ==========
String 'this is a test length' and the Length is 21
// Program for Copy a String to another without using String Function
#include <conio.h>
#include <stdio.h>
void main()
{
int i,j,len=0;
char src[50],dest[50];
clrscr();
printf("\nEnter a the Source String : " );
gets(src);
for(i=0;src[i]!='\0';i++)
{
dest[i]=src[i];
}
dest[i]='\0';
printf("\n============ String Copy ========== \n");
printf("\n Source String '%s' and Copied to '%s' ",src,dest);
free(src);
getch();
}
Output:
Enter a the Source String : Creating Function
============ String Copy ==========
Source String 'Creating Function' and Copied to 'Creating Function'
// Program for Compare two String without using String Function
#include <conio.h>
#include <stdio.h>
void main()
{
int i,flag=0;
char str[50],str1[50],ch,ch1;
clrscr();
printf("\nEnter a the First String : " );
gets(str);
printf("\nEnter a the Second String : " );
gets(str1);
for(i=0;str[i]!='\0';i++)
{
ch=str[i];
ch1=str1[i];
if(ch>=97 && ch<=122)
{
ch-=32;
}
if(ch1>=97 && ch1<=122)
{
ch1-=32;
}
if(ch!=ch1)
{
flag=1;
break;
}
}
printf("\n============ String Compare ========== \n");
if(flag==0)
{
printf("\n Both String '%s' and '%s' are equal ",str,str1);
}
else
{
printf("\n Both String '%s' and '%s' are Not equal ",str,str1);
}
getch();
}
Output:
Enter a the First String : Testing
Enter a the Second String : testing
============ String Copy ==========
Both String 'Testing' and 'testing' are equal
Enter a the First String : Test
Enter a the Second String : Rest
============ String Copy ==========
Both String 'Test' and 'Rest' are Not equal
Enter a the First String : TEST
Enter a the Second String : test
============ String Copy ==========
Both String 'TEST' and 'test' are equal
// Program for String Reverse without String Function
#include <conio.h>
#include <stdio.h>
void main()
{
int i,j,len=0;
char str[50],revstr[50];
clrscr();
printf("\nEnter a String : " );
gets(str);
for(i=0;str[i]!='\0';i++)
{
len++;
}
j=0;
for(i=len-1;i>=0;i--)
{
revstr[j++]=str[i];
}
printf("\n Original String '%s' and Reversed to '%s' ",str,revstr);
free(str); // Releases memory block occupied by str
getch();
}
Output:
Enter a String : Hello World!
============ String Reverse ==========
Original String 'Hello World!' and Reversed to '!dlroW olleH'
// Program for String Concatenation without String Function
#include <conio.h>
#include <stdio.h>
void main()
{
int i,len=0,j;
char str[50],str1[50],ch,ch1;
clrscr();
printf("\nEnter a the First String : " );
gets(str);
printf("\nEnter a the Second String : " );
gets(str1);
for(i=0;str[i[!='\0';i++)
{
len++;
}
len=len-1;
for(i=0;str1[i]!='\0';i++)
{
str[len++]=str1[i];
}
str[len]='\0';
printf("\n============ String Concatenation ========== \n");
printf("\n First String '%s' and Second String '%s' ",str,str1);
printf("\n Concatenated in First '%s' ",str);
getch();
}
Output:
Enter a the First String : Microsoft
Enter a the Second String : Office
============ String Concatenation ==========
First String 'Microsoft' and Second String 'Office'
Concatenated in First 'MicrosoftOffice'
// Program for StringTokenizer without String Function
#include <conio.h>
#include <stdio.h>
void main()
{
int i,len=0,j;
char str[100],str1[50],ch,ch1;
clrscr();
printf("\nEnter a Sentence : " );
gets(str);
printf("\n============ String Tokenizer ========== \n");
printf("\n Origina Input '%s' the Tokens : ",str);
for(i=0;str[i]!='\0';i++)
{
len++;
}
str[len]=' ';
str[len+1]='\0';
for(i=0;i<len;i++)
{
for(j=0;j<50;j++)
{
str1[j]='\0';
}
j=0;
while(str[i]!=' ')
{
str1[j++]=str[i];
i++;
}
printf("\n%s",str1);
}
getch();
}
Output:
Enter a Sentence : I have a dream
============ String Tokenizer ==========
Original Input 'I have a dream' the Tokens :
I
have
a
dream
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