String in C


Strings are actually one-dimensional array of characters terminated by a null character '\0'.

Declaration  :

char  <array_name>[size];


char name[20];

Initialization :

char greeting[] = "Hello";


  char greeting[] = {‘H', ‘e', ‘l', ‘l‘, ’o’, '\0'};

Input output String:

gets():  Input String

puts():  Output/Print String

strcat ( )
strcat ( str2, str1 ); – str1 is concatenated at the end of str2.
strcpy ( )
strcpy ( str1, str2) – It copies contents of str2 into str1.
strlen ( )
nt x=strlen( str1) it counts the number of characters in str1
strcmp ( )
int x=strcmp(str1,str2) : Returns 0 if str1 is same as str2. Returns <0 if strl < str2. Returns >0 if str1 > str2
strlwr ( )
strlwr(str1) Converts string to lowercase
strupr ( )
strupr(str1) Converts string to uppercase
strrev ( )
strrev(str1) Reverses the given string

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