How to convert golang int to string

Golang is a strongly typed language, and traditional data type conversion is one of the most common operations. In Golang, converting int type data to string data type is also a common conversion method, but this requires developers to master some knowledge about conversion methods and techniques.

This article will lead readers to understand the techniques for converting int type into string type in Golang. Readers can learn how to perform type conversion and gain an in-depth understanding of how Golang handles types.

1. Convert int to string method in Golang

To convert int type to string type in Golang, you can use strconv.Itoa function to achieve it. The Itoa function converts a number of type int to its string representation.

The following is the sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    var num int = 12345
    var str string = strconv.Itoa(num)
    fmt.Printf("num=%d, str=%s\n", num, str)
}

Output result:

num=12345, str=12345

2. Convert string to int method in Golang

In Golang Converting the string type to int type can be achieved using the strconv.Atoi function. The Atoi function converts a string into an int type variable.

The following is the sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    var str string = "12345"
    num, err := strconv.Atoi(str)
    if err == nil {
        fmt.Printf("str=%s, num=%d\n", str, num)
    } else {
        fmt.Println(err.Error())
    }
}

Output result:

str=12345, num=12345

3. Int64 in Golang is converted to string type

In Golang , int and int64 are both integer data types. When you need to convert int64 type data into string type, you can also use the strconv.Itoa function.

The following is the sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    var num int64 = 1234567890
    var str string = strconv.FormatInt(num,10)
    fmt.Printf("num=%d, str=%s\n", num, str)
}

Output result:

num=1234567890, str=1234567890

4. The string type in Golang is converted to int64 method

In In Golang, if you need to convert string type data into int64 type data, you can use the strconv.ParseInt function. This function needs to pass in two parameters: the string to be converted and the converted hexadecimal value.

The following is a sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    var str string = "1234567890"
    num, err := strconv.ParseInt(str, 10, 64)
    if err == nil {
        fmt.Printf("str=%s, num=%d\n", str, num)
    } else {
        fmt.Println(err.Error())
    }
}

Output result:

str=1234567890, num=1234567890

5. Golang’s error type processing

In Golang, if If the data type conversion fails, the corresponding error message will be returned. Developers can process error messages, record logs, debug and other operations.

The following is the sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    var str string = "test"

    num, err := strconv.Atoi(str)

    if err != nil {
        fmt.Println(err.Error()) //输出错误信息
    } else {
        fmt.Println(num)
    }
}

Output result:

strconv.Atoi: parsing "test": invalid syntax

6. Summary

This article mainly introduces the integer data types in Golang The conversion methods are demonstrated in the form of code examples, respectively, in the form of code examples to convert int and int64 types into string type data and string type data into int and int64 type data. In addition, it also briefly introduces the handling of error types in Golang.

The above tips can help developers better perform data type conversion and improve code quality and efficiency.

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