arrays c multidimensional-array segmentation-fault 所以基本上,我试图从一个巨大的文本文件中读取数据,并需要将数据存储在2Dstring数组中C。但我每次都得到segmentation fault。 下面是我用来创建数组的代码: Y = 3 X = 12 char ***some_array=NULL; some_array = (char ***)malloc(Y * sizeof(char *))...
#include<stdio.h>#include<stdlib.h>#include<string.h>char**create_2d_char_array(int rows,int cols){char**array=(char**)malloc(rows*sizeof(char*));for(int i=0;i<rows;i++){array[i]=(char*)malloc(cols*sizeof(char));memset(array[i],'0',cols);}returnarray;}voidfree_2d_char_...
#include <stdio.h> #include <string.h> #include <stdlib.h> int main(void) { FILE* fp; FILE* fp2; char nameArray[20][120], str[100]; int i = 0, j = 0; char name[20]; printf("Please enter a file name: "); scanf("%s", &name); fp = fopen(name, "r"); while (fsca...
#include <iostream>#include<string>usingnamespacestd;// 方法1:传递了二维数组的首地址,和二维数组的行数 voidprint1_Array2D(int(*ptr)[4],intcnt) {for(inti =0; i < cnt; i++) {for(intj =0; j <4; j++) { cout<< ptr[i][j] <<""; } cout<<endl; } } // 方法2:传递了二维...
#include<stdio.h> #include<stdlib.h> #include<string.h> #include<stdbool.h> // 编译指令:gcc -o main rbtree_int.c // 本代码实现红黑树,存储int型key,未指定value。 #define RBTREE_DEBUG 1 // 是否运行测试代码 typedef int KEY_TYPE; // 节点的key类型 #define RED 1 #define BLACK 0 /...
(char **)b); // 取指向的一级指针对应字符串做比较 } // Test 2D String int main(void) { const char *name[] = {"Jerry", "Tom", "Toby", "Ada"}; // 指针数组,name本质是二级指针 const char name2[4][256] = {"Berry", "Tom", "Toby", "Ada"}; // 二维字符串数组,留冗余...
free_Aarray2D((void**)p); return 0; } 运行结果如下: 三.C++语言中动态申请连续的二维数组 可以看出我们已经成功实现了在C语言中动态申请连续的二维数组,如果上面的程序不使用int类型而使用string类这种类型,那会有什么后果了?肯定的说,由于没有调用构造函数和析构函数,程序绝对会造成内存泄露。因此要做下改...
问C 2D字符串数组在其声明的函数外部导致分段错误EN前些时候，一个朋友突然问我：python做计算实在是太...
How do I declare a 2D array to be a string? How to access 2D array in C++? How do you use array_2d in Python? Returning a 2D Array from a Function to Main in C: Explained Solution 1: My approach would be to establish a framework for the 2D array based on its: ...
In C, strings are simply an array of characters followed by the “null terminating character”. The null terminating character is a character with the integer value zero, and it is used to represent the end of a string. Let us see how you can define a string. If you want to create a...