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/**
* 主函数
*/
int main(int argc, char *argv[])
{
if(argc == 1) return 0;
FILE* fileSRC = fopen(argv[1], "r");
if(fileSRC == NULL)
{
printf("文件不存在或不可读");
return 0;
}
FILE* fileDST1 = fopen(strcat(argv[1], ".1"), "w+");
//
unsigned int bufferSize = 1024*1024; //1M bytes buffer
void* bufferSrc = malloc(bufferSize);
unsigned int length = 0;
while( !feof(fileSRC) )
{
length = fread(bufferSrc, bufferSize, 1, fileSRC);
printf("%d", length);
fwrite(bufferSrc, length, 1, fileDST1);
}
fclose(fileSRC); fclose(fileDST1); free(bufferSrc);
return 0;
}
#include <stdio.h>
#include <string.h>
int main()
{
FILE *fp;
char c[] = "This is runoob";
char buffer[20];
/* 打开文件用于读写 */
fp = fopen("file.txt", "w+");
/* 写入数据到文件 */
fwrite(c, strlen(c) + 1, 1, fp);
/* 查找文件的开头 */
fseek(fp, SEEK_SET, 0);
/* 读取并显示数据 */
fread(buffer, strlen(c)+1, 1, fp);
printf("%s\n", buffer);
fclose(fp);
return(0);
}
#include "iostream"
using namespace std;
int main(int argc, char *argv[])
{
if (argc == 1) return 0;
FILE* fileSRC = fopen(argv[1], "r");
if (fileSRC == NULL)
{
printf("文件不存在或不可读");
return 0;
}
char szDest[256] = { 0 };
sprintf_s(szDest, 256, "%s%s", argv[1], ".1");
FILE* fileDST1 = fopen(szDest, "w+");
unsigned int bufferSize = 1024 * 1024; //1M bytes buffer
void* bufferSrc = malloc(bufferSize);
unsigned int length = 0;
while (!feof(fileSRC))
{
length = fread(bufferSrc, 1, bufferSize, fileSRC);
printf("%d", length);
fwrite(bufferSrc, length, 1, fileDST1);
}
fclose(fileSRC);
fclose(fileDST1);
free(bufferSrc);
return 0;
}