The strcat() function concatenates the contents of one c-string with another c-string.
The strcat() function concatenates string2 to string1 and ends the resulting string with the null character.
The strcat() function works on null-ended strings. The string arguments to the function should contain a null character (\0) that marks the end of the string.
The strcat() function takes two statements: dest and src . This function appends a copy of the character string pointed to by src to the end of the string pointed to by dest. The null terminating character at the end of dest is replaced by the first character of src and the resultant character is also null-terminated.
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