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Golang is a popular programming language used for web development, networking, and system administration. When working with integers in Golang, you may need to convert them to strings for various reasons. In this article, we will explore how to convert an int to a string in Golang.
Golang provides the strconv package, which includes various functions to convert strings, floats, and integers to different types. To convert an integer to a string, we can use the strconv.Itoa() function. The Itoa stands for βinteger to ASCII.β
Here is an example:
// declare an integer variable
var num int = 123
// convert integer to string
str := strconv.Itoa(num)
// print the result
fmt.Println(str) // output: 123
In the above example, we declared an integer variable num and assigned it a value of 123. Then, we used the strconv.Itoa() function to convert the integer to a string, and assigned the result to a variable str. Finally, we printed the result to the console using the fmt.Println() function.
We can also use the fmt.Sprintf() function to convert an integer to a string. This function works similarly to the printf() function in C programming language. It formats the given value and returns a string.
Here is an example:
// declare an integer variable
var num int = 123
// convert integer to string
str := fmt.Sprintf(β%dβ, num)
// print the result
fmt.Println(str) // output: 123
In the above example, we used the fmt.Sprintf() function to format the integer value of num using the β%dβ format specifier. Then, we assigned the result to a variable str and printed it to the console using the fmt.Println() function.
If you need more control over the string formatting, you can use the strconv.FormatInt() function. This function takes an integer value and a base as input and returns a string.
Here is an example:
// declare an integer variable
var num int64 = 1234567890
// convert integer to string with base 10
str := strconv.FormatInt(num, 10)
// print the result
fmt.Println(str) // output: 1234567890
In the above example, we declared an int64 variable num and assigned it a value of 1234567890. Then, we used the strconv.FormatInt() function to convert the integer to a string with base 10, and assigned the result to a variable str. Finally, we printed the string to the console using the fmt.Println() function.
If you need to add zero padding to the output string, you can use the strconv.FormatInt() function with the β%0xdβ format specifier, where x is the width of the output string:
var num int64 = 42
str := strconv.FormatInt(num, 10)
fmt.Println(str) // "42"
str = strconv.FormatInt(num, 10)
fmt.Println(str) // "000000042"
If you want to format the output string with comma separation for thousands, you can use the βgoβ format specifier with the fmt.Sprintf() function:
var num int64 = 1000000
str := fmt.Sprintf("%'d", num)
fmt.Println(str) // "1,000,000"
Converting an int to a string in Golang is a simple process that can be done using the strconv.Itoa(), fmt.Sprintf(), or strconv.FormatInt() function. Choose the appropriate function based on your formatting requirements.