cannot convert from ‘const char *’ to ‘char *’ const char *c=aa.c_str(); string.c_str()只能转换成const char *, 要转成char *这样写: string mngName; char t[200]; memset(t,0,200); strcpy(t,mngName.c_str()); 版权声明:本文内容由互联网用户自发贡献,该文观点仅代表作者本人。...
Convert.ToInt32() 转换为整型(int) Convert.ToChar() 转换为字符型(char) Convert.ToString() 转换为字符串型(string) Convert.ToDateTime() 转换为日期型(datetime) Convert.ToDouble() 转换为双精度浮点型(double) Conert.ToSingle() 转换为单精度浮点型(float) (5)、 实现自己的转换,通过继承接口IConvent...
double num = 12345.678; char * sir; int dec_pl, sign, ndigits = 3; /* Keep 3 digits of precision. * / str = fcvt(num, ndigits, &dec-pl, &sign); /* Convert the float to a string. * / printf("Original number; %f\n" , num) ; /* Print the original floating-point value....
cout<<"convert other type to string:"<<endl; strings=convertToString(44.5); cout<<s<<endl; intii=125; cout<<convertToString(ii)<<endl; doubledd=3.1415926; cout<<convertToString(dd)<<endl; //convert from string to other type cout<<"convert from string to other type:"<<endl; inti=co...
8、 double num = 12345.678; char * sir; int dec_pl, sign, ndigits = 3; /* Keep 3 digits of precision. * / str = fcvt(num, ndigits, &dec-pl, &sign); /* Convert the float & 9、#160; to a string. * / printf("Original number; %fn" , 10、num) ; /* Print the origi...
用法:char *itoa(int value, char *string, int radix); 详细解释:itoa是英文integer to array(将int整型数转化为一个字符串,并将值保存在数组string中)的缩写. 参数: value: 待转化的整数。 radix: 是基数的意思,即先将value转化为radix进制的数,范围介于2-36,比如10表示10进制,16表示16进制。
#include <stdio.h> #include <stdlib.h> #define INT_TO_STR(x) #x int main() { int num = 123; char* str = INT_TO_STR(num); printf("整型转换为字符串:%s\n", str); return 0; } 在上面的代码中,我们定义了一个宏INT_TO_STR,它使用了#操作符来将传入的整型参数转换为字符串。然...
// C2440s.cpp// Build: cl /Zc:strictStrings /W3 C2440s.cpp// When built, the compiler emits:// error C2440: 'initializing' : cannot convert from 'const char [5]'// to 'char *'// Conversion from string literal loses const qualifier (see// /Zc:strictStrings)intmain(){char* s1 ...
而我们通常使用的char是8bit。继续搜索wchar_t*到char*的转换,msdn上面有一篇文章是Convert Between Various String Types,讲了VC++2005中的各种字符串char *, wchar_t*, _bstr_t, CComBSTR, CString,basic_string, andSystem.String的相互转换。其中将wchar_t*转换为char*的代码如下:(为了保持文章的一致性,...
char add[10];}telebook[100];我定义的结构。然后我想在某个名字后面加序号:telebook[i].name = strcat(telebook[i].name,'1'); 合并字符串但是报错:error C2664: 'strcat' : cannot convert parameter 1 from 'char' to 'char *'Conversion from integral type to pointer type requires reinterpret_...