Question

我有一个简单的软件用于在控制台中打印电路板。我使用addBoard（）（添加组件的名称不当的方法）运行下面的程序，它只运行打印。即使它是序列中的最后一个。如果我将其注释掉，程序运行正常，并在Visual Studio Code终端窗口中打印出所有内容。

这可能是什么原因造成的？（还有关于我使用指针的任何指示......或其他任何不是最佳实践的内容都非常感激。）谢谢！

#include <stdio.h>
#include <stdlib.h>

char *posArr[10][30];

void printInstructions(){
    printf("Hello and welcome! Here you can configure your own breadboard\n");
    printf("To do this you will use coordinates using this syntax:\n");
    printf("width: 3\n");
    printf("height: 5\n");
    printf("After that a component will be choosen.\n");
    printf("It would look like below:\n");    
}

void printBoard(){
    for (int i = 1; i <= 10; i++) //Height
    {
        printf("\n");
        for (int j = 1; j <= 30; j++) //Width
        {
            printf("%s", posArr[i][j]);
        }
    }
}

void clearBoard(){
    for (int i = 1; i <= 10; i++) //Height
    {
        for (int j = 1; j <= 30; j++) //Width
        {
            posArr[i][j] = ". ";
        }
    }
}

void buildBoard(int *width, int *height){
    //*height -= 1;
    //*width -= 1;
    for (int i = 1; i <= 10; i++) //Height
    {
        //printf("\n");
        for (int j = 1; j <= 30; j++) //Width
        {
            if (*height == i && *width == j){
                posArr[i][j] = "¤ ";
                //printf("¤ ");
            }
            else {
                posArr[i][j] = ". ";
                //printf(". ");
            }
        }
    }
}

void addBoard(){
    int h, w;

    while(1)
    {
        printf("Width: ");
        scanf("%d", w);
        printf("Height: ");
        scanf("%d", h);

        buildBoard(&w,&h);

        //Add length later
        printBoard();
    }
}

int main() {
    printInstructions();
    int a=3, b=5;
    buildBoard(&a,&b);
    printBoard();
    clearBoard();
    //addBoard();
}

Answer 1

您可以尝试使用此代码（稍微修改代码）

#include <stdio.h>
#include <stdlib.h>

char *posArr[10][30];

void printInstructions(){
    printf("Hello and welcome! Here you can configure your own breadboard\n");
    printf("To do this you will use coordinates using this syntax:\n");
    printf("width: 3\n");
    printf("height: 5\n");
    printf("After that a component will be choosen.\n");
    printf("It would look like below:\n");
}

void printBoard(){
    for (int i = 0; i < 10; i++)
    {
        printf("\n");
        for (int j = 0; j < 30; j++)
        {
            printf("%s", posArr[i][j]);
        }
    }
}

void clearBoard(){
    for (int i = 0; i < 10; i++)
    {
        for (int j = 0; j < 30; j++)
        {
            posArr[i][j] = ". ";
        }
    }
}

void buildBoard(int *width, int *height){
    for (int i = 0; i < 10; i++)
    {
        for (int j = 0; j < 30; j++)
        {
            if (*height == i && *width == j){
                posArr[i][j] = "¤ ";
            }
            else {
                posArr[i][j] = ". ";
            }
        }
    }
}

int main() {
    printInstructions();
    int a=3, b=5;
    buildBoard(&a,&b);
    printBoard();
    clearBoard();
}

添加或删除顺序最后呈现C程序无用的方法

1 个答案: