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Title: Strings
Description: Basic to advance coverage of Strings concept in DSA and practice questions.
Description: Basic to advance coverage of Strings concept in DSA and practice questions.
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22
...
Character arrays are called
strings
...
Initialization of string can be done by following ways
...
Compiler
inserts the null character automatically
...
C program for printing any string
...
h>
void main()
{
char name[]= “India”;
int i=0;
while(name[i]!=‟\0‟)
{
printf(“%c”, name[i]);
i++;
}
}
Output: India
22
...
#include
It does not consider space in string
...
For solving this problem, we use „gets‟
function in place of „scanf()‟
...
#include
2 Some standard library string function:
Function
strlen
strlwr
strupr
strcat
strcpy
strcmp
strrev
Use
Finds length of a string
...
Converts a string to uppercase
...
Copies a string into another
...
Reverses string
...
3 C program for calculating the length of any string using library function (strlen)
...
h>
#include
4 C program for calculating the length of any string without using library function
...
h>
#include
h>
int String_Length(char *);
void main()
{
char s[]="shashank";
int len;
clrscr();
len=String_Length(s);
printf("\n The length of string is %d", len);
getch();
}
int String_Length(char *p)
{
int l=0;
while(*p!='\0')
{
l++;
p++;
}
return(l);
}
Output:
The length of string is 8
22
...
#include
h>
void main()
{
char s1[]= “Shashank”;
char s2[10];
strcpy(s2, s1);
printf(“\n First string is %s”, s1);
printf(“\n Second string is %s”, s2);
}
Output:
First string is Shashank
Second string is Shashank
22
...
#include
h>
#include
7 C program for concatenating two strings using library function (strcat)
...
h>
#include
8 C program for concatenating two strings without using library function
...
h>
#include
h>
void Concat_String(char *,char*);
void main()
{
char s1[20]="shashank";
char s2[]=" yadav";
clrscr();
Concat_String(s1,s2);
printf("\n The concat string is %s",s1);
getch();
}
void Concat_String(char *p1,char *p2)
{
while(*p1!='\0')
{
p1++;
}
while(*p2!='\0')
{
*p1=*p2;
p1++;
p2++;
}
*p1='\0';
}
Output:
The concat string is shashank yadav
22
...
#include
10 C program for comparing two strings without using library function
...
h>
#include
h>
int Compare_String(char *,char *);
void main()
{
char s1[]="Shyam";
char s2[]="Ram";
int i, j, k;
clrscr();
i=Compare_String(s1,"Shyam");
j=Compare_String(s1,s2);
k=Compare_String(s1,"ShyamSundar");
printf("\n%d %d %d",i,j,k);
getch();
}
int Compare_String(char *p1,char *p2)
{
int c;
while(*p1!='\0'||*p2!='\0')
{
if(*p1!=*p2)
{
return(*p1-*p2);
}
else
{
p1++;
p2++;
}
}
if(*p1=='\0'&&*p2=='\0')
return(0);
}
22
...
#include
h>
#include
12 Another C program for checking given string is Palindrome or not
...
h>
#include
h>
void main()
{
char s[10], t[10];
clrscr();
printf("Enter one string: ");
gets(s);
strcpy(t, s);
strrev(s);
if(strcmp(s,t)==0)
printf("Palindrome");
else
printf("Not Plalindrome");
getch();
}
Title: Strings
Description: Basic to advance coverage of Strings concept in DSA and practice questions.
Description: Basic to advance coverage of Strings concept in DSA and practice questions.