变量 s:="123"
要得到s中字符串 1+2+3 的值
另一种思路
```
package main
import (
"fmt"
"strconv"
)
func main() {
s := "123"
var total int
for i :=0; i< len(s) ; i++ {
b, _ := strconv.Atoi(string(s[i]))
//log.Println(b)
total += b
}
fmt.Printf("%T %v \n", total, total)
}
```
#3
更多评论
```
package main
import (
"strconv"
"fmt"
)
func main() {
var s = "987654321"
var result = 0
re, _ := strconv.Atoi(s)
for i := re; i > 0; i /= 10 {
result += i % 10
}
fmt.Println(result)
}
```
#1