package main import ( "bufio" "fmt" "os" "strings" ) func main() { /* 解题思路:for range 遍历字符串, v 默认是 int32类型 */ scanner := bufio.NewScanner(os.Stdin) scanner.Scan() str := strings.ToLower(scanner.Text()) scanner.Scan() flag := strings.ToLower(scanner.Text()) count := 0 for _, v := range str { if v == int32(flag[0]) { count++ } } fmt.Println(count) }