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Different Ways to Convert an Integer Variable to String in Golang
  • Last Updated : 10 May, 2020

Integer variable cannot be directly convert into String variable. In order to convert string to integer type in Golang , you have store value of integer variable as string in string variable. For this, we are using strconv and fmt package functions.

1. Itoa() Function:  The Itoa stands for Integer to ASCII and returns the string representation of integer with base 10.

Syntax:

func Itoa(i int) string

Example : Convert an integer variable into String using strconv.Itoa() function.

Go






// Go program to illustrate 
// How to convert integer 
// variable into String
package main
  
import (
    "fmt"
    "strconv"
)
  
//Main Function
  
func main() {
    i := 32
    s := strconv.Itoa(i)
    fmt.Printf("Type : %T \nValue : %v\n", s, s)
  
}

Output:

Type : string 
Value : 32

2. FormatInt() Function: The FormatInt is used to represents the string of integer value with base [2,36]. The result uses the lower-case letters ‘a’ to ‘z’ for digit values >= 10.

Syntax:

func FormatInt(i int64, base int) string

Example : Convert an integer variable into String using strconv.FormatInt() function.

Go




// Go program to illustrate 
// How to convert integer 
// variable into String
package main
  
import (
    "fmt"
    "strconv"
)
  
//Main Function
  
func main() {
    i := -32
    s := strconv.FormatInt(int64(i) , 7)
    fmt.Printf("Type : %T \nValue : %v\n", s, s)
  
}

Output:

Type : string 
Value : -44

3. FormatUint() Function: The FormatUint is used to represents the string of integer value with base [2,36]. The result uses the lower-case letters ‘a’ to ‘z’ for digit values >= 10. It is similar to FormatInt but the difference is that uint64 is the type of integer value.

Syntax:



func FormatUint(i uint64, base int) string

Example : Convert an integer variable into String using strconv.FormatUint() function.

Go




// Go program to illustrate 
// How to convert integer 
// variable into String
package main
  
import (
    "fmt"
    "strconv"
)
  
//Main Function
  
func main() {
    i := 32
    s := strconv.FormatUint(uint64(i) , 7)
    fmt.Printf("Type : %T \nValue : %v\n", s, s)
  
}

Output:

Type : string 
Value : 44

4. Sprintf() Function: The Sprintf is used to represents the string of integer value by formatting according to a format specifier and returns the resulting string.

Syntax:

func Sprintf(format string, a ...interface{}) string

Example : Convert an integer variable into String using fmt.Sprintf() function.

Go




// Go program to illustrate 
// How to convert integer 
// variable into String
package main
  
import (
    "fmt"
)
  
//Main Function
  
func main() {
    i := 32
    s := fmt.Sprintf("%d", i)
    fmt.Printf("Type : %T \nValue : %v\n", s, s)
  
}

Output:

Type : string 
Value : 32
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