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37
malloc.c
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37
malloc.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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int main()
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{
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SetConsoleOutputCP(65001); // 设置控制台为 UTF-8 编码,配合 #include <windows.h> ,终端输出的就不是乱码
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int* ptr;
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// 分配可以存储 5 个 int 值的内存块, 内存中的值是随机的
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ptr = (int*)malloc(5 * sizeof(int));
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if (ptr == NULL)
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{
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printf("内存分配失败\n");
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return 1;
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}
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// 使用分配的内存块
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for (int i = 0; i < 5; i++)
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{
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ptr[i] = i + 1;
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}
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// 打印内存中的值
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for (int i = 0; i < 5; i++)
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{
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printf("%d ", ptr[i]);
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}
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printf("\n");
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// 释放内存
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free(ptr);
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system("pause"); //保持终端存在,配合 #include<stdlib.h>
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return 0;
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}
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BIN
malloc.exe
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BIN
malloc.exe
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Binary file not shown.
40
memory.c
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40
memory.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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int e;
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static int f;
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int g = 10;
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static int h = 10;
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int main()
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{
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SetConsoleOutputCP(65001); // 设置控制台为 UTF-8 编码,配合 #include <windows.h> ,终端输出的就不是乱码
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int a;
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int b = 10;
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static int c;
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static int d = 10;
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char* i = "test";
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char* k = NULL;
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printf("&a\t %p\t // 局部未初始化变量\n", &a);
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printf("&b\t %p\t // 局部初始化变量\n", &b);
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printf("&c\t %p\t // 静态局部未初始化变量\n", &c);
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printf("&d\t %p\t // 静态局部初始化变量\n", &d);
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printf("&e\t %p\t // 全局未初始化变量\n", &e);
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printf("&f\t %p\t // 全局静态未初始化变量\n", &f);
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printf("&g\t %p\t // 全局初始化变量\n", &g);
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printf("&h\t %p\t // 全局静态初始化变量\n", &h);
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printf("i\t %p\t // 只读数据(文字常量区)\n", i);
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k = (char*)malloc(10);
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printf("k\t %p\t // 动态分配的内存\n", k);
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system("pause"); //保持终端存在,配合 #include<stdlib.h>
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return 0;
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}
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BIN
memory.exe
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BIN
memory.exe
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Binary file not shown.
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