将整数放入二维数组（矩阵）

Question

好的，伙计们，我正在尝试制作一个程序，您可以在其中猜测您输入的数字随机放置到矩阵或二维数组中的位置。 例如，用户输入了“3”，因此整数将被放置在矩阵的随机行和列上。

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

#define R 4
#define C 4
void display(char a[][C]);
void placing(char b[][C]);
void guess(int m, int n);

void main(){
int x=0,y=0,m,n,number;
int matrix[R][C];
char a[R][C]={{'x','x','x','x'},{'x','x','x','x'},{'x','x','x','x'},{'x','x','x','x'}};
printf("\t\t\t      Welcome to my game");
printf("\nEnter your number: ");
scanf("%d",&number);
display(a);
placing(a);
printf("\n\nYour number is now being placed at a random location");
printf("\n\nGuess where your number is located (row) (column)");
printf("\n\nEnter coordinates: ");
scanf("%d%d",&m,&n);

getch();
}

void display(char a[][C]){
for(int row=0; row<R; row++)
{
    printf ("\n");
    for(int column=0; column<C; column++)
    {
    printf ("\t%c\t", a[row][column]);
    }
}
}

void placing(int b[][C]){
int randomrow=0,randomcolumn=0;
int i=0;

randomrow = rand()%4;
randomcolumn = rand()%4;

for(int row=0; row < randomrow; row++){
    for(int column=0;column < randomcolumn; column++, i++){
        b[row][column];
    }
}
printf("%d",b[R][C]);
}

这是整个程序。有什么建议吗？

Answer 1

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

int main()
{
    int matrix[4][4] = 
    {
        {-1,-1,-1,-1},
        {-1,-1,-1,-1},
        {-1,-1,-1,-1},
        {-1,-1,-1,-1},
    };

    int user_input;
    int random_row;
    int random_column;
    int row_guess;
    int col_guess;

    printf("Enter a number to add: \n");
    scanf("%d", &user_input);
    printf("User entered: %d\n", user_input);

    srand(time(NULL)); 

    random_row = rand() % 4;
    random_column = rand() % 4;

    printf("random_row: %d\n", random_row);
    printf("random_column: %d\n", random_column);

    matrix[random_row][random_column] = user_input;

    for(int row = 0; row < 4; row++)
    {
        for(int column = 0; column < 4; column++)
        {
            printf("%d ", matrix[row][column]);
        }
        printf("\n");
    }

    printf("Guess Random Row: \n");
    scanf("%d", &row_guess);
    printf("User Row Guess: %d\n", row_guess);

    printf("Guess Random Column: \n");

    scanf("%d", &col_guess);
    printf("User Column Guess: %d\n", col_guess);

    if (matrix[row_guess][col_guess] == user_input)
    {
        printf("You guessed correctly!\n");
    }
    else
    {
        printf("You guessed incorrectly\n");
    }

    return 0;
}