Go语言计算指定年月天数的方法
本文实例讲述了Go语言计算指定年月天数的方法。分享给大家供大家参考。具体实现方法如下：
packagemain
import(
"fmt"
"bufio"
"os"
"regexp"
"strconv"
)
funcmain(){
year:=input("year","^[0-9]{1}[0-9]{3}$")
month:=input("month","^(0{1}[0-9]{1}|1{1}[0-2]{1})$")
count(year,month)
fmt.Println("PressEnterbuttontocontinue...")
reader:=bufio.NewReader(os.Stdin)
lastInput,_,err:=reader.ReadRune()
iferr!=nil{
fmt.Fprintln(os.Stderr,"Occurerrorwheninput(last)'",lastInput,"':",err)
}
return
}
funccount(yearint,monthint)(daysint){
ifmonth!=2{
ifmonth==4||month==6||month==9||month==11{
days=30
}else{
days=31
fmt.Fprintln(os.Stdout,"Themonthhas31days");
}
}else{
if(((year%4)==0&&(year%100)!=0)||(year%400)==0){
days=29
}else{
days=28
}
}
fmt.Fprintf(os.Stdout,"The%d-%dhas%ddays.\n",year,month,days)
return
}
funcinput(namestring,regexpTextstring)(numberint){
varvalidNumber=false
for!validNumber{
fmt.Println("Pleaseinputa",name,":")
reader:=bufio.NewReader(os.Stdin)
inputBytes,_,err:=reader.ReadLine()
iferr!=nil{
fmt.Fprintln(os.Stderr,"Occurerrorwheninput",name,":",err)
continue
}
inputText:=string(inputBytes)
validNumber,err=regexp.MatchString(regexpText,inputText)
iferr!=nil{
fmt.Fprintln(os.Stderr,"Occurerrorwhenmatch",name,"(",inputText,"):",err)
continue
}
ifvalidNumber{
number,err=strconv.Atoi(inputText)
iferr!=nil{
fmt.Fprintln(os.Stderr,"Occurerrorwhenconvert",name,"(",inputText,"):",err)
continue
}
}else{
fmt.Fprintln(os.Stdout,"The",name,"(",inputText,")doesnothavethecorrectformat!")
}
}
fmt.Println("Theinput",name,":",number)
return
}
希望本文所述对大家的Go语言程序设计有所帮助。