STD::TO_STRING V C++

Je ena od metod za pretvorbo vrednosti v niz.

Ostali so-

Z uporabo razreda stringstream
Z uporabo metode to_string().
Z uporabo boost.lexical cast

Metoda to_string() sprejme eno celoštevilsko spremenljivko ali drug podatkovni tip in jo pretvori v niz.

Pretvori številsko vrednost v niz Sintaksa:

 string to_string (int val); string to_string (long val); string to_string (long long val); string to_string (unsigned val); string to_string (unsigned long val); string to_string (unsigned long long val); string to_string (float val); string to_string (double val); string to_string (long double val); Parameters : val - Numerical value. Return Value : A string object containing the representation of val as a sequence of characters.

CPP

// CPP program to illustrate> // std::to_string> #include> // Driver code> int> main()> {> > int> var1=16;> > > // Converting float to string> > std::string str1 = std::to_string(12.10);> > // Converting integer to string> > std::string str2 = std::to_string(9999);> > > // Converting integer to string by taking a variable> > std::string str3 = std::to_string(var1);> > // Printing the strings> > std::cout < < str1 < <>

'
'>

;> > std::cout < < str2 < <>

'
'>

;> > std::cout < < str3 < <>

'
'>

;> > return> 0;> }>

Izhod

12.100000 9999 16

Težava: Poiščite določeno števko v danem celem številu. Primer:

Input : number = 10340, digit = 3 Output : 3 is at position 3

Izvedba:

CPP

// CPP code to find a digit in a number> // using std::tostring> #include> // Driver code> int> main()> {> > // Converting number to string> > std::string str = std::to_string(9954);> > // Finding 5 in the number> > std::cout < <> '5 is at position '> < < str.find(> '5'> ) + 1;> }>

Izhod: