这里使用functon template的方式将std::string转int、std::string转double。 stringstream_to_double.cpp / C++ 1 /* 2 (C) OOMusou 2006http://oomusou.cnblogs.com 3 4 Filename : stringstream_to_double.cpp 5 Compiler : Visual C++ 8.0 6 Description : Demo how to convert string to any type. ...
main() { @autoreleasepool { NSString *str = @"123.45"; NSScanner *scanner = [NSScanner scannerWithString:str]; double doubleValue; if ([scanner scanDouble:&doubleValue]) { NSLog(@"Converted double value: %f", doubleValue); } else { NSLog(@"Failed to convert string to double.")...
这里使用functon template的方式将std::string转int、std::string转double。 stringstream_to_double.cpp / C++ 1 /* 2 (C) OOMusou 2006http://oomusou.cnblogs.com 3 4 Filename : stringstream_to_double.cpp 5 Compiler : Visual C++ 8.0 6 Description : Demo how to convert string to any type. ...
可以用sscanf 如果是宽字符utf,请使用wtof Example This program shows how numbers stored as strings can be converted to numeric values using the atof function.Copy Code // crt_atof.c // // This program shows how numbers stored as // strings can be converted to numeric // values ...
这里使用functon template的方式将std::string转int、std::string转double。 stringstream_to_double.cpp / C++ 1 /**//* 2 (C) OOMusou 2006 4 Filename : stringstream_to_double.cpp 5 Compiler : Visual C++ 8.0 6 Description : Demo how to convert string to any type. ...
static void Main(string[] args){ //提示用户输入一个数字接收并且向控制台打印用户输入的这个数字的2倍 Console.WriteLine("请输入一个数字");string strNumber = Console.ReadLine();//将用户输入的字符串转换成int或者double类型 double number = Convert.ToDouble(Console.ReadLine());Console.WriteLine(number...
voidtestTypeConvert() { //int --> string inti=5; strings=to_string(i); cout<<s<<endl; //double --> string doubled=3.14; cout<<to_string(d)<<endl; //long --> string longl=123234567; cout<<to_string(l)<<endl; //char --> string ...
const char *nptr, char **endptr);long double strtold(const char *nptr, char **endptr);DESCRIPTION The strtod(), strtof(), and strtold() functions convert the initial portion of the string pointed to by nptr to double, float, and long double representation, respectively.。。。
Hi I would like to ask how I can convert string to long double for further calculation in long double format? Let's say i got c string phase = 0.000000789 or 507890123.005 and i want to convert from cstring to long double and want to do Accphase = phase + Accphase //in long ...
序号function原型说明1atofdouble atof (const char* str);Convert string to double2atoiint atoi (const char * str);Convert string to integer3atollong int atol ( const char * str );Convert string to long integer4atoll(c++11)long long int atoll ( const char * str );Convert string to long...