Learn to Program with C_ Learn to Program using the Popular C Programming Language ( PDFDrive )

Chapter 2 ■ C – The Basics
to assign a value to name. What we can do is use the standard function strcpy (for string copy),
as in:
strcpy(name, "Alice in Wonderland"); // this is valid
But in order to use strcpy (and other string functions), we must precede our program with
the directive:
#include <string.h>
We summarize all of this in Program P2.1.
Program P2.1
#include <stdio.h> // needed for printf
#include <string.h> // needed for strcpy
int main() {
char name[50];
strcpy(name, "Alice in Wonderland");
printf("Hello, %s\n", name);
}
When run, this program will print
Hello, Alice in Wonderland
In Sections 3.4 and 5.9, we will see how to read a string value into a variable.
Joining two strings is an operation we sometimes want to perform. We say we want to
concatenate the two strings. We can do this with the standard string function strcat (string
concatenation). For example, suppose we have:
char name[30] = "Alice";
char last[15] = "Wonderland";
The statement
strcat(name, last);
will add the string in last to the one in name. It is up to us to ensure that name is big enough to
hold the joined strings. The result is that name will now hold AliceWonderland; the value in last
does not change. The following statements will set name to Alice in Wonderland.
strcat(name, " in "); //one space before and after "in"
strcat(name, last);
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