A1438377233_17451_10_2017_STRINGS new.ppt - STRING String...

STRING

String is collection of Characters (or ) group of elements in
which symbols enclosed within quotation marks.

String is always declared as character arrays.

in other words character arrays are called as STRINGS.
char name[5]={‘I’,’n’,’d’,’I’,’a’};


interpretation
Arrays whose elements are characters called as
string

Strings are always terminated with a NULL
character ('\0' or 0)
char a[]="hello\n"; /*size?*/
100 101 102 103 104
h e l l o

String Initialization

Initialization

char m[9] = “I like C”;

char m[ ] = “I like C”;

char m[ ] = { ‘I’, ‘ ’, ‘l’, ‘i’, ‘k’, ‘e’, ‘ ’,’C’ };

char m[ ] ={ { ‘I’ },{ ‘l’ },{ ‘i’ },{ ‘k’ },{ ‘e’ },{‘u’ } };

main()
{
char name1[9] = “I like C”;
char name2[9 ] ={ { ‘I’ },{ ‘l’ },{ ‘i’ },{ ‘k’ },{ ‘e’ },{ ‘u’ } };
char name3[9 ] = { ‘I’, ‘ ’, ‘l’, ‘i’, ‘k’, ‘e’, ‘ ’,’c’,’\0’ };
clrscr();
printf(“name1=%s”,name1);
printf(“name1=%s”,name2);
printf(“name1=%s”,name3);
}

Print the elements of char
array
main()
{
char str[15]=“have a nice day”;
int i=0;
while(i<=15)
{
printf(“%c”,str[i]);
i++;
}
}

Print the elements of char
array
main()
{
char str[ ]=“have a nice day”;
int i=0;
while( str[i]!=‘\0’)
{
printf(“%c”,str[i]);
i++;
}
}

Standard string functions

Strlen :-determines length of string

Strcpy :-copies a string from source to destination

Strncpy:-copies char of string to another string upto
specific length

Strcmp:-compare char of 2 strings

Stricmp:-compare 2 strings

Strncmp:-compare char of 2 strings upto specific length

Strnicmp:-compare char of 2 strings upto specific
length .Ignore case.

Strlen function
It counts the number of characters in a given
string.