怎么在c语言中把一个文本的数字全部翻倍

Question

按格式除了0017其他的数字全部翻倍,并且翻倍后的数字能按照原本的格式正常的输出

Answer 1

2种方法：第一种根据数据是否有花括号的区别，第二种根据标签

<string>

这样选择

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXSIZE 1024
int isDigit(char c)
{
    return (int)c <= (int)'9' && (int)c >= (int)'0' ? 1 : 0;
}
//根据标签值有无花括号作为区别
void outputString(char *line)
{
    int len = strlen(line), i = 0;
    char buffer[MAXSIZE] = "\0"; //缓冲区
    int mark = 0;
    int j = 0;
    int value;
    for (i = 0; i < len; i++)
    {
        if (line[i] == '{')
        {
            printf("%c", line[i]);
            mark += 1;
        }
        else if (line[i] == '}' && j > 0)
        {
            mark -= 1;
            buffer[j] = '\0';
            // str -> int
            value = atoi(buffer);
            printf("%d", 2 * value);
            printf("%c", line[i]);
            j = 0;
        }
        else if (mark > 0 && isDigit(line[i]))
        {
            buffer[j++] = line[i];
        }
        else if (mark > 0 && line[i] == ',' && j > 0)
        {
            buffer[j] = '\0';
            // str -> int
            value = atoi(buffer);
            printf("%d", 2 * value);
            printf("%c", line[i]);
            j = 0;
        }
        else
        {
            printf("%c", line[i]);
        }
    }
}

//根据标签作为区别
void outputString1(char *line, char *targetMark)
{
    int len = strlen(line), i = 0;
    char numBuffer[MAXSIZE] = "\0";  //缓冲区
    char markBuffer[MAXSIZE] = "\0"; //标签
    int label_mark = 0, num_mark = 0, target_mark = 0;//表示 是否为标签范围、数字范围、目标标签
    int m_j = 0, n_j = 0; //标签表示，数字表示
    int value;
    for (i = 0; i < len; i++)
    {
        if (line[i] == '<')
        {
            label_mark = 1;
            m_j = 0;
            markBuffer[m_j++] = line[i];
            printf("%c", line[i]);
        }
        else if (label_mark == 1)
        {
            markBuffer[m_j++] = line[i];
            printf("%c", line[i]);
            if (line[i] == '>')
            {
                label_mark = 0;
                markBuffer[m_j] = '\0';
                m_j = 0;
                if(strcmp(markBuffer,targetMark)==0){
                    target_mark  = 1;
                }
            }
        }else if(target_mark==1&&isDigit(line[i])){
            numBuffer[num_mark++] = line[i];
        }else if(target_mark==1&&num_mark>0&&!isDigit(line[i])){
            numBuffer[num_mark]='\0';num_mark=0;
            // str -> int *2 -> output
            value = atoi(numBuffer);
            printf("%d", 2 * value);
            printf("%c",line[i]);
        } else{
            printf("%c",line[i]);
        }
    }
}

int main()
{
    char line[MAXSIZE + 1] ;//= "<string>{{0,0},{140,44}}</string>";
    // outputString1(line, "<string>");
    // system("pause");
    char*filename="C:/Users/Lenovo/Desktop/1.xml";
    FILE*fp=fopen(filename,"r+");
    if(fp==NULL) return -1;
    while(!feof(fp)){
        fgets(line,MAXSIZE,fp);
        outputString1(line,"<string>");
    }
    printf("\n");
    fclose(fp);
}