接受以大写字母开头的字符串的程序

给定一个由字母组成的字符串str ，任务是检查给定的字符串是否以大写字母开头。
例子：

Input: str = "GeeksforGeeks"
Output: Accepted

Input: str = "geeksforgeeks"
Output: Not Accepted

方法：

• 查找字符串第一个字符的 ASCII 值
• 检查这个值是否在 [65, 90] 的范围内
• 如果是，打印 Accepted
• 不接受其他打印

下面是上述方法的实现：

C++

// C++ program to accept String
// starting with Capital letter
 
#include 
using namespace std;
 
// Function to check if first
// character is Capital
int checkIfStartsWithCapital(string str)
{
 
    if (str[0] >= 'A' && str[0] <= 'Z')
        return 1;
    else
        return 0;
}
 
// Function to check
void check(string str)
{
    if (checkIfStartsWithCapital(str))
        cout << "Accepted\n";
    else
        cout << "Not Accepted\n";
}
 
// Driver function
int main()
{
    string str = "GeeksforGeeks";
    check(str);
 
    str = "geeksforgeeks";
    check(str);
 
    return 0;
}

Java

// Java program to accept String
// starting with Capital letter
class GFG
{
     
    // Function to check if first
    // character is Capital
    static int checkIfStartsWithCapital(String str)
    {
     
        if (str.charAt(0) >= 'A' && str.charAt(0)<= 'Z')
            return 1;
        else
            return 0;
    }
     
    // Function to check
    static void check(String str)
    {
        if (checkIfStartsWithCapital(str) == 1)
            System.out.println("Accepted");
        else
            System.out.println("Not Accepted");
    }
     
    // Driver function
    public static void main (String[] args)
    {
        String str = "GeeksforGeeks";
        check(str);
     
        str = "geeksforgeeks";
        check(str);
    }
}
 
// This code is contributed by AnkitRai01

Python3

# Python3 program to accept String
# starting with Capital letter
 
# Function to check if first
# character is Capital
def checkIfStartsWithCapital(string) :
 
    if (string[0] >= 'A' and string[0] <= 'Z') :
        return 1;
    else :
        return 0;
 
# Function to check
def check(string) :
 
    if (checkIfStartsWithCapital(string)) :
        print("Accepted");
    else :
        print("Not Accepted");
 
# Driver function
if __name__ == "__main__" :
 
    string = "GeeksforGeeks";
    check(string);
 
    string = "geeksforgeeks";
    check(string);
 
# This code is contributed by AnkitRai01

C#

// C# program to accept String
// starting with Capital letter
using System;
 
class GFG
{
     
    // Function to check if first
    // character is Capital
    static int checkIfStartsWithCapital(string str)
    {
     
        if (str[0] >= 'A' && str[0]<= 'Z')
            return 1;
        else
            return 0;
    }
     
    // Function to check
    static void check(string str)
    {
        if (checkIfStartsWithCapital(str) == 1)
            Console.WriteLine("Accepted");
        else
            Console.WriteLine("Not Accepted");
    }
     
    // Driver function
    public static void Main()
    {
        string str = "GeeksforGeeks";
        check(str);
     
        str = "geeksforgeeks";
        check(str);
    }
}
 
// This code is contributed by AnkitRai01

Javascript

 
 
// JavaScript program to accept String
// starting with Capital letter
 
// Function to check if first
// character is Capital
function checkIfStartsWithCapital(str)
{
 
    if (str[0] >= 'A' && str[0] <= 'Z')
        return 1;
    else
        return 0;
}
 
// Function to check
function check(str)
{
    if (checkIfStartsWithCapital(str))
        document.write( "Accepted<br>");
    else
        document.write( "Not Accepted<br>");
}
 
// Driver function
 
var str = "GeeksforGeeks";
check(str);
str= "geeksforgeeks";
check(str);
 
 

输出：

Accepted
Not Accepted

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