Home Software Tutorial Office Software C language: Enter a line of characters and count the English letters, spaces, numbers and others.

C language: Enter a line of characters and count the English letters, spaces, numbers and others.

Jan 07, 2024 am 11:54 AM
Count the number of characters in a line of text C language: Enter a line of characters and count them separately Use java language to write program statistics from control

一、C语言统计一行字符中的英文字母、空格、数字和其他字符的方法如下: ```c #include int main() { char line[128]; int letters = 0, spaces = 0, digits = 0, others = 0; printf("请输入一行字符:"); fgets(line, sizeof(line), stdin); for (int i = 0; line[i] != '\0'; i++) { if ((line[i] >= 'a' && line[i]

你可以使用C语言编写一个程序来统计一行字符中不同类型字符的个数,比如英文字母、空格、数字和其他字符。以下是一个简单的示例: ```c #include int main() { char line[100]; int letters = 0, spaces = 0, digits = 0, others = 0; printf("请输入一行字符:"); fgets(line, sizeof(line), stdin); int i = 0; while (line[i] != '\0') { if ((line[i] >= 'A' && line[i] = 'a' && line[i]

#include <stdio.h>
#include <ctype.h>

int main() {
    char line[100];
    int i, alphabets = 0, digits = 0, spaces = 0, others = 0;

    printf("请输入一行字符: ");
    fgets(line, sizeof(line), stdin);

    for (i = 0; line[i] != &#39;\0&#39;; ++i) {
        if (isalpha(line[i]))
            alphabets++;
        else if (isdigit(line[i]))
            digits++;
        else if (isspace(line[i]))
            spaces++;
        else
            others++;
    }

    printf("英文字母个数:%d\n", alphabets);
    printf("数字个数:%d\n", digits);
    printf("空格个数:%d\n", spaces);
    printf("其他字符个数:%d\n", others);

    return 0;
}
Copy after login

这段代码使用了 isalpha()isdigit()isspace() 等函数来判断字符的类型,并计算不同类型字符的个数。

二、使用Java语言编写程序统计一行字符串中数字个数

以下是使用Java编写的程序,可以统计从控制台输入的一行字符串中数字的个数:

import java.util.Scanner;

public class CountDigits {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入一行字符串: ");
        String input = scanner.nextLine();

        int digitCount = 0;
        for (int i = 0; i < input.length(); i++) {
            if (Character.isDigit(input.charAt(i))) {
                digitCount++;
            }
        }

        System.out.println("数字个数为: " + digitCount);
        scanner.close();
    }
}
Copy after login

这段Java代码使用了 Character.isDigit() 方法来检查字符串中的每个字符是否为数字,并统计数字的个数。

三、输入一行字符分别统计其中英文字母、空格、数字和其他字符的个数

无论是C语言还是Java语言,你可以根据上述示例进行调整,实现输入一行字符后分别统计其中英文字母、空格、数字和其他字符的个数。在循环检查字符类型时,根据不同类型进行计数即可。

总结:

  1. (1) 使用C语言或Java语言编写程序统计一行字符中不同类型字符的个数,可以利用字符的ASCII值或相应的语言方法进行判断。
  2. (2) 在循环遍历字符时,使用条件语句或相关的语言函数来判断字符的类型,并分别计数不同类型字符的个数。

The above is the detailed content of C language: Enter a line of characters and count the English letters, spaces, numbers and others.. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

5 Things You Can Do in Excel for the Web Today That You Couldn't 12 Months Ago 5 Things You Can Do in Excel for the Web Today That You Couldn't 12 Months Ago Mar 22, 2025 am 03:03 AM

Excel web version features enhancements to improve efficiency! While Excel desktop version is more powerful, the web version has also been significantly improved over the past year. This article will focus on five key improvements: Easily insert rows and columns: In Excel web, just hover over the row or column header and click the " " sign that appears to insert a new row or column. There is no need to use the confusing right-click menu "insert" function anymore. This method is faster, and newly inserted rows or columns inherit the format of adjacent cells. Export as CSV files: Excel now supports exporting worksheets as CSV files for easy data transfer and compatibility with other software. Click "File" > "Export"

How to Use LAMBDA in Excel to Create Your Own Functions How to Use LAMBDA in Excel to Create Your Own Functions Mar 21, 2025 am 03:08 AM

Excel's LAMBDA Functions: An easy guide to creating custom functions Before Excel introduced the LAMBDA function, creating a custom function requires VBA or macro. Now, with LAMBDA, you can easily implement it using the familiar Excel syntax. This guide will guide you step by step how to use the LAMBDA function. It is recommended that you read the parts of this guide in order, first understand the grammar and simple examples, and then learn practical applications. The LAMBDA function is available for Microsoft 365 (Windows and Mac), Excel 2024 (Windows and Mac), and Excel for the web. E

How to Create a Timeline Filter in Excel How to Create a Timeline Filter in Excel Apr 03, 2025 am 03:51 AM

In Excel, using the timeline filter can display data by time period more efficiently, which is more convenient than using the filter button. The Timeline is a dynamic filtering option that allows you to quickly display data for a single date, month, quarter, or year. Step 1: Convert data to pivot table First, convert the original Excel data into a pivot table. Select any cell in the data table (formatted or not) and click PivotTable on the Insert tab of the ribbon. Related: How to Create Pivot Tables in Microsoft Excel Don't be intimidated by the pivot table! We will teach you basic skills that you can master in minutes. Related Articles In the dialog box, make sure the entire data range is selected (

If You Don't Use Excel's Hidden Camera Tool, You're Missing a Trick If You Don't Use Excel's Hidden Camera Tool, You're Missing a Trick Mar 25, 2025 am 02:48 AM

Quick Links Why Use the Camera Tool?

You Need to Know What the Hash Sign Does in Excel Formulas You Need to Know What the Hash Sign Does in Excel Formulas Apr 08, 2025 am 12:55 AM

Excel Overflow Range Operator (#) enables formulas to be automatically adjusted to accommodate changes in overflow range size. This feature is only available for Microsoft 365 Excel for Windows or Mac. Common functions such as UNIQUE, COUNTIF, and SORTBY can be used in conjunction with overflow range operators to generate dynamic sortable lists. The pound sign (#) in the Excel formula is also called the overflow range operator, which instructs the program to consider all results in the overflow range. Therefore, even if the overflow range increases or decreases, the formula containing # will automatically reflect this change. How to list and sort unique values ​​in Microsoft Excel

Use the PERCENTOF Function to Simplify Percentage Calculations in Excel Use the PERCENTOF Function to Simplify Percentage Calculations in Excel Mar 27, 2025 am 03:03 AM

Excel's PERCENTOF function: Easily calculate the proportion of data subsets Excel's PERCENTOF function can quickly calculate the proportion of data subsets in the entire data set, avoiding the hassle of creating complex formulas. PERCENTOF function syntax The PERCENTOF function has two parameters: =PERCENTOF(a,b) in: a (required) is a subset of data that forms part of the entire data set; b (required) is the entire dataset. In other words, the PERCENTOF function calculates the percentage of the subset a to the total dataset b. Calculate the proportion of individual values ​​using PERCENTOF The easiest way to use the PERCENTOF function is to calculate the single

How to Use the PIVOTBY Function in Excel How to Use the PIVOTBY Function in Excel Apr 11, 2025 am 12:56 AM

Quick Links The PIVOTBY Syntax

How to Format a Spilled Array in Excel How to Format a Spilled Array in Excel Apr 10, 2025 pm 12:01 PM

Use formula conditional formatting to handle overflow arrays in Excel Direct formatting of overflow arrays in Excel can cause problems, especially when the data shape or size changes. Formula-based conditional formatting rules allow automatic formatting to be adjusted when data parameters change. Adding a dollar sign ($) before a column reference applies a rule to all rows in the data. In Excel, you can apply direct formatting to the values ​​or background of a cell to make the spreadsheet easier to read. However, when an Excel formula returns a set of values ​​(called overflow arrays), applying direct formatting will cause problems if the size or shape of the data changes. Suppose you have this spreadsheet with overflow results from the PIVOTBY formula,

See all articles