Stoi Was Not Declared In This Scope Dev C++

  

Stoi is not declared in this scope. OPEN I want to convert this string a to integer (using C14, Code::Blocks IDE), but it says that it's not declared in this scope.

Stoi Was Not Declared In This Scope Dev C System

  • 'atoi' was not declared in this scope #97. Closed Thomio-Watanabe opened this issue Dec 13, 2016 4 comments Closed 'atoi' was not declared in this scope #97.
  • Nov 15, 2019  Error 'clrcsr' was not declared in this scope Dev C IDE on windows 10 Online Earning Tips & IT Solutions!!! Please guys Feel Free to ask any query ab.
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Description

The C library function int atoi(const char *str) converts the string argument str to an integer (type int).

Declaration

Following is the declaration for atoi() function.

Parameters

Stoi Was Not Declared In This Scope Dev C 5

  • str − This is the string representation of an integral number.

Return Value

This function returns the converted integral number as an int value. If no valid conversion could be performed, it returns zero.

Example

The following example shows the usage of atoi() function.

Stoi was not declared in this scope dev c download

Let us compile and run the above program that will produce the following result −

stdlib_h.htm
P: 1
Here is the code..
#include <iostream>
main()
{
double f_temp, k_temp, c_temp, temp;
char ch, quit;
std::cout << ' *********** Temprature Conversion Calculator **************';
std::cout << 'nn Please enter the temprature unit for which you want the coverison ';
std::cout << 'n 1. F for Fahrenheit to Celcius and Kalvin';
std::cout << 'n 2. C for Celsius to Fahrenheit and Kalvin';
std::cout << 'n 3. K for Kalvin to Fahrenheit and Celcius';
startagain:
std::cout << 'nn Please enter you choice: ';
std::cin >> ch;
switch(ch)
{
case 'f':
case 'F':
std::cout << ' Please enter temprature in Farhenheit: ';
std::cin >> f_temp;
c_temp = (f_temp - 32) * 5/9;
k_temp = (f_temp + 459.67) * 5/9;
std::cout << ' Celcius =' << c_temp;
std::cout << 'n Kelvin =' << k_temp;
std::cout << 'n Do you want to calculate another value (y/n): ';
std::cin >> quit;
if (quit 'y' || quit 'Y')
goto startagain;
break;
case 'c':
case 'C':
std::cout << ' Please enter temprature in Celcius: ';
std::cin >> c_temp;
k_temp = c_temp + 273.15 ;
f_temp = c_temp * 9/5 + 32;
std::cout << ' Kelvin =' << k_temp;
std::cout << 'n Farhenheit =' << f_temp;
std::cout << 'n Do you want to calculate another value (y/n): ';
std::cin >> quit;
if (quit 'y' || quit 'Y')
goto startagain;
break;
case 'k':
case 'K':
std::cout << ' Please enter temprature in Kelvin: ';
std::cin >> k_temp;
c_temp = k_temp - 273.15 ;
f_temp = (k_temp - 273.14) * 9/5 + 32;
std::cout << ' Celcius =' << c_temp;
std::cout << 'n Farhenheit =' << f_temp;
std::cout << 'n Do you want to calcute another value (y/n): ';
std::cin >> quit;
if (quit 'y' || quit 'Y')
goto startagain;
break;
default:
std::cout << 'n Invalid Choice';
}
std::cout << endl<<endl;
system('pause');
}