Convert string to char array in C++ - GeeksforGeeks

A way to do this is to copy the contents of the string to char array. This can be done with the help of c_str() and strcpy() function of ... 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ChangeLanguage DataStructuresAlgorithmsInterviewPreparationTopic-wisePracticeC++JavaPythonCompetitiveProgrammingMachineLearningHTMLSDESheetPuzzlesGFGSchoolProjects RelatedArticles ▲RelatedArticlesConvertstringtochararrayinC++ConvertcharacterarraytostringinC++HowtoconvertasinglecharactertostringinC++?static_castinC++|TypeCastingoperatorsconst_castinC++|TypeCastingoperatorsreinterpret_castinC++|TypeCastingoperatorsTypeConversioninC++ConvertingStringstoNumbersinC/C++ConvertingNumbertoStringinC++HowtoFindSizeofanArrayinC/C++WithoutUsingsizeof()Operator?array::size()inC++STLWhatarethedefaultvaluesofstaticvariablesinC?Understanding“volatile”qualifierinC|Set2(Examples)ConstQualifierinCInitializationofstaticvariablesinCUnderstanding“register”keywordinCUnderstanding“extern”keywordinCStorageClassesinCStaticVariablesinCMemoryLayoutofCProgramsHowtodeallocatememorywithoutusingfree()inC?DifferenceBetweenmalloc()andcalloc()withExamplesDynamicMemoryAllocationinCusingmalloc(),calloc(),free()andrealloc()Howtodynamicallyallocatea2DarrayinC?Howtopassa2DarrayasaparameterinC?VectorinC++STLArraysinC/C++std::sort()inC++STLInitializeavectorinC++(7differentways)MapinC++StandardTemplateLibrary(STL)ConvertstringtochararrayinC++ConvertcharacterarraytostringinC++HowtoconvertasinglecharactertostringinC++?static_castinC++|TypeCastingoperatorsconst_castinC++|TypeCastingoperatorsreinterpret_castinC++|TypeCastingoperatorsTypeConversioninC++ConvertingStringstoNumbersinC/C++ConvertingNumbertoStringinC++HowtoFindSizeofanArrayinC/C++WithoutUsingsizeof()Operator?array::size()inC++STLWhatarethedefaultvaluesofstaticvariablesinC?Understanding“volatile”qualifierinC|Set2(Examples)ConstQualifierinCInitializationofstaticvariablesinCUnderstanding“register”keywordinCUnderstanding“extern”keywordinCStorageClassesinCStaticVariablesinCMemoryLayoutofCProgramsHowtodeallocatememorywithoutusingfree()inC?DifferenceBetweenmalloc()andcalloc()withExamplesDynamicMemoryAllocationinCusingmalloc(),calloc(),free()andrealloc()Howtodynamicallyallocatea2DarrayinC?Howtopassa2DarrayasaparameterinC?VectorinC++STLArraysinC/C++std::sort()inC++STLInitializeavectorinC++(7differentways)MapinC++StandardTemplateLibrary(STL)ConvertstringtochararrayinC++ViewDiscussion ImproveArticle SaveArticle LikeArticle DifficultyLevel: MediumLastUpdated: 02Jun,2022Manyofushaveencounterederror‘cannotconvertstd::stringtochar[]orchar*datatype’. Examples: Input:strings="geeksforgeeks"; Output:chars[]={'g','e','e','k','s','f','o', 'r','g','e','e','k','s'}; Input:strings="coding"; Output:chars[]={'c','o','d','i','n','g'};Method1 Awaytodothisistocopythecontentsofthestringtochararray.Thiscanbedonewiththehelpofc_str()andstrcpy()functionoflibrarycstring. Thec_str()functionisusedtoreturnapointertoanarraythatcontainsanullterminatedsequenceofcharacterrepresentingthecurrentvalueofthestring.Syntax: constchar*c_str()const;Ifthereisanexceptionthrownthentherearenochangesinthestring.Butwhenweneedtofindoraccesstheindividualelementsthenwecopyittoachararrayusingstrcpy()function.Aftercopyingit,wecanuseitjustlikeasimplearray. Thelengthofthechararraytakenshouldnotbelessthanthelengthofinputstring. CPP//CPPprogramtoconvertstring//tochararray#include#include usingnamespacestd; //drivercodeintmain(){    //assigningvaluetostrings    strings="geeksforgeeks";     intn=s.length();     //declaringcharacterarray    charchar_array[n+1];     //copyingthecontentsofthe    //stringtochararray    strcpy(char_array,s.c_str());     for(inti=0;i#include usingnamespacestd; //drivercodeintmain(){    //assigningvaluetostrings    strings("geeksforgeeks");    //declaringcharacterarray:p    charp[s.length()];     inti;    for(i=0;i#include#includeusingnamespacestd; //DriverCodeintmain(){    char*char_arr;    stringstr_obj("GeeksForGeeks");    char_arr=&str_obj[0];    cout<#include usingnamespacestd; //drivercodeintmain(){    //assigningvaluetostrings    stringst="GeeksForGeeks";    //thec_str()functionreturnsaconstpointer    //tonullterminatedcontents.    constchar*str=st.c_str();    //printingthechararray    cout<