String concatenate strcat() Function In C

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strcat() Function

The strcat() function is used to concatenate one string(source) at the end of another string(destination). It does the following:

  • Takes the destination String.
  • Finds the NULL character.
  • It copies the source string starting at the location of the NULL character of destination string.
  • Appends a NULL character to the destination string when all characters of the source string are copied to the destination string.

Syntax:

  
 strcat (str1, str2);


Example 1:



Output:


 Welcome to aimtocode


Example 2:



Output:

 Enter first string: Welcome to

 Enter second string: aimtocode

 The concatenated string is: Welcome toaimtocode


List of String function in C


Functions Description
strcat( ) The strcat() function is used to concatenate one string(source) at the end of another string(destination).
strncat( ) Appends first n characters of a string at the end of another.
strcpy( ) Copies from str2 into str1
strncpy( ) Copies given number of characters of one string to another
strlen( ) Gives the length of str1
strcmp( ) Returns 0 if str1 is same as str2. Returns <0 if strl < str2. Returns >0 if str1 > str2
strcmpi( ) Same as strcmp() function. But, this function negotiates case. “A” and “a” are treated as same.
strchr( ) Returns pointer to first occurrence of char in str1
strrchr( ) last occurrence of given character in a string is found.
strstr( ) Returns pointer to first occurrence of str2 in str1
strrstr( ) Returns pointer to last occurrence of str2 in str1
strdup( ) Duplicates the string
strlwr( ) Converts string to lowercase
strupr( ) Converts string to uppercase
strrev( ) Reverses the given string
strset( ) Sets all character in a string to given character
strnset( ) It sets the portion of characters in a string to given character
strtok( ) Tokenizing given string using delimiter


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