尝试在C

Question

正如标题所说，我试图在C中进行单词搜索。但是，当我运行我所拥有的内容时，我会收到中止（核心转储）消息。

我的代码：

void lefttoright(int rowcol, char **matrix, char* find){

    int i, j, k, q, len, count = 0;
    len = strlen(find);

    for (i = 0; i < rowcol; i++){
            for (j = 0; j < rowcol; j++){
                    if (matrix[i][j] == find[0]){
                            char* correct = malloc(sizeof(char) * 20);

                            for (q = j; q < rowcol; q++){
                                    for (k = 0; k < len; k++){
                                            if (matrix[i][q] == find[k]){
                                                    correct[k] = matrix[i][q];
                                            }
                                    }
                            if (strcmp(correct, find) == 0){
                                    count++;
                                    printf("%s\n", correct);
                                    printf("%d\n", count);
                            }
                            }
                            free(correct);
                    }
                    else continue;
            }
    }
    printf("%d", count);
}

if (strcmp(correct, find) == 0){
         count++;
         printf("%s\n", correct);
         printf("%d\n", count);
}

打印

bagel
1
bagel
2
bagel
3
bagel
4
bagel
5
bagel
6
bagel
7
bagel
8
bagel
9
bagel
10
bagel
11
bagel
12
bagel
13
Aborted (core dumped)

是什么让它中止？另外，我需要做些什么来使count == 1（这个词只出现一次）？

如果需要，我的整个程序：

#include <stdio.h>
#include <stdlib.h>
#include "scanner.h"
#include <string.h>
#include <ctype.h>

char** matrixMaker(int argc, char **argv);
void displayMatrix(int rowcol, char **matrix);
void lefttoright(int rowcol, char **matrix, char* find);

int main(int argc, char **argv){

    FILE *fp = fopen(argv[2], "r");

    int rowcol = atoi(argv[1]);
    int a, i = 0, j;
    unsigned char cha;
    char **matrix;
    matrix = malloc( sizeof(char *) * rowcol);

    for (a=0; a<20; a++)
            matrix[a] = malloc( sizeof(char) * rowcol);

    for (i = 0; i < rowcol; i++){
            for (j = 0; j < rowcol; j++){
                    cha = tolower((unsigned char)readChar(fp));
                    matrix[i][j] = cha;
            }
    }

    char* find = malloc(sizeof(char) * 20);

    displayMatrix(rowcol, matrix);

    printf("Enter a word to find in the puzzle : \n");
    scanf("%s", find);

    while(find[i]){
            putchar(tolower((unsigned char)find[i]));
            i++;
    }

    lefttoright(rowcol, matrix, find);

    free(matrix);

    return 0;
}

void displayMatrix(int rowcol, char **matrix){

    int r,c;
    for (r = 0; r < rowcol; ++r){
            for (c = 0; c < rowcol; ++c){
                    printf("%c",matrix[r][c]);
            }
            printf("\n");
    }
}

void lefttoright(int rowcol, char **matrix, char* find){

    int i, j, k, q, len, count = 0;
    len = strlen(find);

    for (i = 0; i < rowcol; i++){
            for (j = 0; j < rowcol; j++){
                    if (matrix[i][j] == find[0]){
                            char* correct = malloc(sizeof(char) * 20);

                            for (q = j; q < rowcol; q++){
                                    for (k = 0; k < len; k++){
                                            if (matrix[i][q] == find[k]){
                                                    correct[k] = matrix[i][q];
                                            }
                                    }
                            if (strcmp(correct, find) == 0){
                                    count++;
                                    printf("%s\n", correct);
                                    printf("%d\n", count);
                            }
                            }
                            free(correct);
                    }
                    else continue;
            }
    }
printf("%d", count);
}