Chapter 12.2, Problem 12.1CP

1. A) “strlen” function:

Explanation of Solution

The C++ string class library function contains many predefined string functions. They are listed below:

The “strlen” function accepts a string as an argument and returns the full length of the string, but it will not include the null character (‘\0’)...

B) “strcat” function:

Explanation of Solution

The “strcat” function accepts two strings and concatenates or appends those two strings.

Example:

Consider the example of the “strcat” function is as follows:

char a [] = "Hai";

char b [] = "Bye";

strcat(a,b);

Here, the v...

C) “strcpy” function:

Explanation of Solution

The “strcpy” function copies the contents of one string to another string.

Example:

Consider the example of the “strcpy” function is as follows:

char a [] = "Hai";

char b [] = "Bye";

strcpy(b,a);

Here, the v...

D) “strncpy” function:

Explanation of Solution

The “strncpy” function copies at most n characters from one string to another string.

Example:

Consider the example of the “strncpy” function is as follows:

char a [3];

char b [] = "Bye";

strncpy(a,b,2);

Here, the varia...

E) “strcmp” function:

Explanation of Solution

In C++ programming language, the “strcmp” function is used to compare two strings character by character. The comparison is stopped when the different character or null character are found. This function accepts two strings and returns the integer value that indicates how the two strings are compare to each other.

Example:

Consider the example of the “strcmp” function is as follows:

char a [] = ...

F) “strstr” function:

Explanation of Solution

The “strstr” function is used to search the first occurrence of one string from another string.

Example:

Consider the example of the “strstr” function is as follows:

char a []= "HaiBye";

char b [] = "Bye";

strstr (a,b);

Here, the variable “a...