UNIX环境高级编程学习之第七章进程环境-存储器分配malloc

UNIX环境高级编程学习之第七章进程环境-存储器分配malloc

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/types.h>char* newChar(int size){return (char*)malloc(size);}int newInt(int** ppInt, long size){*ppInt = (int*)malloc(size);if (*ppInt == NULL){printf("malloc Error/n");exit(-1);}return 0;}int main(int argc, char* argv[]){printf("pid=%lu/n", getpid()); // 进程IDchar* pChar = NULL;pChar = newChar(512);if (NULL == pChar){printf("malloc Error/n");exit(-1);}memset(pChar, '/0', 512);strcpy(pChar, "WanZhenjie");printf("pChar=%s/n", pChar);int* pInt;newInt(&pInt, 512);int i;for (i=0;i<10;i++){pInt[i] = i;}for (i=0;i<10;i++){printf("pInt[%d]=%d/n", i, pInt[i]);}// 释放空间free(pChar);free(pInt);pChar = NULL;pInt = NULL;return 0;}