invalid oprands to binary expression 是什么意思

"invalid operands to binary expression" 意味着在二元表达式中使用了无效的操作数。这通常发生在使用不兼容类型的操作数进行二元操作时。例如，如果你尝试将字符串和整数相加，就会出现这个错误。

在计算机编程中，二元表达式是指需要两个操作数进行计算的表达式，例如加法、减法、乘法和除法等。如果操作数的类型不匹配或者不支持所使用的操作符，就会出现 "invalid operands to binary expression" 的错误。

解决这个问题的方法通常是确保操作数的类型匹配，并使用适当的转换或类型转换来修复错误。

相关问题

incalid oprands to binary expression

"Invalid operands to binary expression" is an error message that occurs when the operands (values or variables) used in a binary expression (an operation with two operands such as addition, subtraction, multiplication, or division) are not compatible with each other.

For example, trying to add a string and an integer or dividing by zero would result in this error message.

Here are some examples of invalid operands to binary expression:

1. Adding a string and an integer:

string str = "hello";
int num = 5;
cout << str + num; // error: invalid operands to binary expression ('std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >' and 'int')

2. Dividing by zero:

int num1 = 10;
int num2 = 0;
cout << num1 / num2; // error: invalid operands to binary expression ('int' and 'int')

3. Using bitwise operators on non-integer types:

float num1 = 3.14;
float num2 = 2.71;
cout << (num1 & num2); // error: invalid operands to binary expression ('float' and 'float')

qt invalid operands to binary expression

invalid operands to binary expression意为二进制表达式的无效操作数，这通常是因为在操作符上对类型进行了错误的操作。比如，对不能比较的类型进行了比较。在你提供的引用中，报错invalid operands to binary expression (const char * and const char)是因为在字符串拼接时，使用了错误的操作符或操作数。