C++变量重载歧义

Question

对于下面这行代码:

for (int i = 1; i <= var; i++) { double inc = (14.0) - double(ceil(log10(i)))};

一直报错

Overloading ambiguity between "std::log10(double)" and "std::log10(float)"

我也尝试同时转换 inc和 ceil(log10(i))漂浮无济于事。想法？

Answer 1

是什么让您认为类型转换 inc 或 ceil 会有帮助？编译器告诉您它无法确定您是想要 log10(float) 还是 log10(double)。您需要向编译器说明这一点

double inc = (14.0) - double(ceil(log10((float)i)));

或

double inc = (14.0) - double(ceil(log10((double)i)));