Strings can be manipulated through following functions which are defined in the library STRING.H
 

strcpy()	used to copy one string to another
strcmp()	used for comparing two strings
stricmp()	compares the strings by ignoring the case.
strlen()	returns the length of the string
strcat()	Concatenates the strings to another string
strrev()	Reverses the string and returns the pointer of that

 

program to create two strings and assign concatenated form to third string.
 

main() { char str1[20]="Syspro",str2[20]=" Internationals"; char str3[40]; printf("\nFirst string contains %s",str1); printf("\nSecond string contains %s",str2); strcpy(str3,str1); /* copy string 1 to string 3 */ strcat(str3,str2); /* concatenate string 2 to string 3*/ printf("\n After copy and concatenating string 3 contains %s",str3); }

following program calculates the length of string.
 

main() { char name[20]; int l; printf("Enter your name :"); scanf("%s",name); l=strlen(name); printf("The length of the %s string is %d",name,l); }

program to see the entered string is palindrome or not.
 

main() { char str1[20],str2[20]; printf("Enter the word : "); scanf("%s",str1); strcpy(str2,str1); if( strcmp(str1,str2)==0)     printf("Entered word is palindrome"); else     printf("\nEntered word is not palindrome"); }

Examples of Palindromes are like MADAM, MALYALAM, where reversing the string does not changes the meaning of word.