To convert a complex number to a string using the strconv package in Go, you can use the complex128's real and imaginary parts to build the string representation. Here's an example:
package main
import (
"fmt"
"strconv"
)
func main() {
num := complex(3, -4) // Example complex number
realPart := strconv.FormatFloat(real(num), 'f', -1, 64)
imaginaryPart := strconv.FormatFloat(imag(num), 'f', -1, 64)
result := realPart + "+" + imaginaryPart + "i"
fmt.Println(result) // Output: 3-4i
}
In the code above, we use the complex() function to create a complex number num with a real part of 3 and an imaginary part of -4.
To convert the real and imaginary parts to strings, we use the strconv.FormatFloat() function. The first argument is the number to be formatted, the second argument 'f' specifies the format as a floating-point number, the third argument -1 means to use the default precision, and the fourth argument 64 specifies the number of bits used for the representation.
We then concatenate the real and imaginary parts with the "+" and "i" symbols to get the final string representation of the complex number.
Finally, we print the result, which in this case is "3-4i".