Starting Out with C++ from Control Structures to Objects (9th Edition)
Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 10, Problem 30RQE
Program Plan Intro

“atof” function:

In C++, the predefined function “atof” is used to convert a string value into a double-precision floating point value; it passes a string literal or character array as an argument and it converts the received value into a double type value; it takes only one parameter as an argument.

  • If the argument value contains nonconvertible contents combined with the integer value then the values will be ignored while converting.
  • In same way, the function will return “0” when the values can’t be able to convert into double data type.

Syntax:

Syntax for the “atof” function is as follows:

double atof (const char* n);

In the above statement,

  • “double” represents the return type of the function.
  • “atof” represents the name of the function.
  • “const char*” represents the data type of the passing argument.
  • “n” is a string variable which is required to be converted.

Example:

The example for the “atof” function is as follows:

//change the string literal to a double value.

double n = atof ("1258.11E-14 ");

In the above line, the string literal “1258.11E-14” is passed as an argument to “atof” and it returns the converted value that is “1.25811e-11”.

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Chapter 10 Solutions

Starting Out with C++ from Control Structures to Objects (9th Edition)

Ch. 10.5 - Write a short description of each of the following...Ch. 10.5 - Write a statement that will convert the string 10...Ch. 10.5 - Prob. 10.13CPCh. 10.5 - Write a statement that will convert the string...Ch. 10.5 - Write a statement that will convert the integer...Ch. 10.6 - Prob. 10.16CPCh. 10 - Prob. 1RQECh. 10 - Prob. 2RQECh. 10 - Prob. 3RQECh. 10 - Prob. 4RQECh. 10 - Prob. 5RQECh. 10 - Prob. 6RQECh. 10 - Prob. 7RQECh. 10 - Prob. 8RQECh. 10 - Prob. 9RQECh. 10 - Prob. 10RQECh. 10 - The __________ function returns true if the...Ch. 10 - Prob. 12RQECh. 10 - Prob. 13RQECh. 10 - The __________ function returns the lowercase...Ch. 10 - The _________ file must be included in a program...Ch. 10 - Prob. 16RQECh. 10 - Prob. 17RQECh. 10 - Prob. 18RQECh. 10 - Prob. 19RQECh. 10 - Prob. 20RQECh. 10 - Prob. 21RQECh. 10 - Prob. 22RQECh. 10 - Prob. 23RQECh. 10 - Prob. 24RQECh. 10 - The ________ function returns the value of a...Ch. 10 - Prob. 26RQECh. 10 - The following if statement determines whether...Ch. 10 - Assume input is a char array holding a C-string....Ch. 10 - Look at the following array definition: char...Ch. 10 - Prob. 30RQECh. 10 - Write a function that accepts a pointer to a...Ch. 10 - Prob. 32RQECh. 10 - Prob. 33RQECh. 10 - T F If touppers argument is already uppercase, it...Ch. 10 - T F If tolowers argument is already lowercase, it...Ch. 10 - T F The strlen function returns the size of the...Ch. 10 - Prob. 37RQECh. 10 - T F C-string-handling functions accept as...Ch. 10 - T F The strcat function checks to make sure the...Ch. 10 - Prob. 40RQECh. 10 - T F The strcpy function performs no bounds...Ch. 10 - T F There is no difference between 847 and 847.Ch. 10 - Prob. 43RQECh. 10 - char numeric[5]; int x = 123; numeri c = atoi(x);Ch. 10 - char string1[] = "Billy"; char string2[] = " Bob...Ch. 10 - Prob. 46RQECh. 10 - Prob. 1PCCh. 10 - Prob. 2PCCh. 10 - Prob. 3PCCh. 10 - Average Number of Letters Modify the program you...Ch. 10 - Prob. 5PCCh. 10 - Prob. 6PCCh. 10 - Name Arranger Write a program that asks for the...Ch. 10 - Prob. 8PCCh. 10 - Prob. 9PCCh. 10 - Prob. 10PCCh. 10 - Prob. 11PCCh. 10 - Password Verifier Imagine you are developing a...Ch. 10 - Prob. 13PCCh. 10 - Word Separator Write a program that accepts as...Ch. 10 - Character Analysis If you have downloaded this...Ch. 10 - Prob. 16PCCh. 10 - Prob. 17PCCh. 10 - Prob. 18PCCh. 10 - Check Writer Write a program that displays a...
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