Concept explainers
“stoi” function:
In C++, the predefined function “stoi” is used to convert a string value into an integer value; it contains three parameters to refer the string to convert, position of first character in the string after the number.
Syntax:
Consider the syntax for the “stoi” function is as follows:
int stoi ( const string& n, size_t* s = 0, int base = 10);
In the above statement,
- “int” represents the return type of the function.
- The first parameter “const string& n” represents the string to be converted.
- The second parameter “size_t* s” represents the position of first character in the string after the number and this argument is an optional one.
- The third parameter “base” represents the base of the conversion and this argument is an optional one.
Example:
Example for the “stoi” function is as follows:
//declare and assign the value to the variable
string s = "5478hai";
//change the string object to an integer value.
int n = stoi(s);
In the above code, the string value “5478hai” stored in the variable “s” is converted into an integer and stored and into the variable “n”; the above statement results the value “5478”.
Want to see the full answer?
Check out a sample textbook solutionChapter 12 Solutions
Starting Out With C++: Early Objects (10th Edition)
- Write a statement that declares a string named city with value Chicago.arrow_forwardplease send step by step complete handwritten solution for Q7arrow_forwardWrite a for statement to display first 5 even numbers (for example, 2, 4, 6, 8, 10)Use the variable count as the counter variable within the statement.arrow_forward
- Which of the following statements is false? * A. The value of the following expression is 3: 17 % 5 B. The value of the following expression is 0.5: 7.5 % 3.5 C. You can use the remainder operator for applications such as determining whether one number is a multiple of another. D. You can use the remainder operator to determine whether a number is odd or even.arrow_forwardWrite a single statement that prints a number at random from 3, 5, 7, 9, 11.arrow_forwardWhich string method does the following: To capitalize the initial character of the string.arrow_forward
- Assume the variable x has been assigned a floating-point value. Write a statement that uses the print function and an F-string to display the value of x rounded to 1 decimal point, with comma separators. For example, if x is assigned the value 123477.7891, the statement would display: 123,477.8arrow_forwarduse the following code: print(f'{your_value:.2f}')arrow_forwardWhich of the following can be checked in switch-case statement ? a) character and integer b) integer and float c) float d) string and characterarrow_forward
- Given 4 floating-point numbers. Use a string formatting expression with conversion specifiers to output their product and their average as integers (rounded), then as floating-point numbers. Output each rounded integer using the following: print(f'{your_value: .0f}') Output each floating-point value with three digits after the decimal point, which can be achieved as follows: print(f'{your_value: .3f}') Ex: If the input is: 8.3 10.4 5.0 4.8 the output is: 2072 7 2071. 680 7. 125arrow_forwardAssume x is integer, the following expressions has the same values *&x and &*x? Select one: a. True b. Falsearrow_forwardWrite a main function that performs the following: • Prompts user to enter 2 values A and B. . If the first number A is less than the second number B, the main function should print the sum of all numbers multiple of 2 from 1 to A. • If the first number A is greater than the second number B, the main function should print the product of all numbers multiple of 4 from 1 to B. • If not, the main function should display "Wrong data. Try again!".arrow_forward
- Np Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:CengageProgramming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:CengageC++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
- Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,Programming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage LearningC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr