我必须打印一个浮点值,但是在编译时不知道精度。所以这个参数必须作为参数传递。这是如何实现的。在 windows 中,使用 CString,格式函数有助于实现这一点。如何在没有 CString 的情况下实现这一点。代码:
int main()
{
/* This below code segment works fine.*/
char str[80];
sprintf(str, "Value of Pi = %.3f", 3.147758);
std::cout << str << std::endl; //Prints "Value of Pi = 3.148"
/* When the precision may vary, henc It needs to be printed required on that.*/
char str2[80];
std::string temp = "%.3f"; //This is required as the precision may change.
// i.e I may have 4 instead 3 decimal points.
sprintf(str2, "Value = %s", temp, …
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