package main
import (
"fmt"
"strconv"
"strings"
)
func main() {
s := "123"
n, err := strconv.Atoi(s)
if err != nil {
fmt.Println("转换出错了")
} else {
fmt.Println(n)
}
s2 := "abc21313abc3456abc3131zhengyuabc"
m := strings.Count(s2, "1")
fmt.Printf("1的出现次数是%d\n",m)
fmt.Println(strings.Index(s2,"1"))
fmt.Println(strings.EqualFold("HeLLo", "hello"))
fmt.Println("HeLLo" == "hello")
}
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