将以下两个函数通过一个主函数调用，求调用后的程序

Question

文件的分割#include<stdio.h>int main(){int len=0;int len2=0;FILE* stream;FILE* stream1;FILE* stream2;char buf[50];char buf1[50];char buf2[50];char text[1024];printf("input anfile path to open:");scanf("%s",buf);stream=fopen(buf,"r+");fseek(stream,0,SEEK_END);len=ftell(stream);printf("the file %s length is %d!\n",buf,len);len2 = len/2;printf("intput 2 file name: \n");scanf("%s%s",buf1,buf2);fseek(stream,0,SEEK_SET);stream1=fopen(buf1,"w+");stream2=fopen(buf2,"w+");fread(text,len2,1,stream);fwrite(text,len2,1,stream1);fread(text,len-len2,1,stream);fwrite(text,len-len2,1,stream2);fclose(stream);fclose(stream1);fclose(stream2);return 0;} 文件的合并#include<stdio.h>int main(){int len=0;int len2=0;FILE* stream;FILE* stream1;char buf[50];char buf1[50];char text[1024];printf("input anfile path to open:");scanf("%s",buf);stream=fopen(buf,"r+");fseek(stream,0,SEEK_END);printf("intput another file name: \n");scanf("%s",buf1);stream1=fopen(buf1,"r+");fseek(stream1,0,SEEK_END);len=ftell(stream1);fseek(stream1,0,SEEK_SET);fread(text,len,1,stream1);fwrite(text,len,1,stream);fclose(stream);fclose(stream1);remove(buf1);//remove the another filereturn 0;}

Answer 1

首先，c中有且仅有一个主函数，所以第一步，你必须的把两个函数改成其他名字：
#include <stdio.h>

int function1()
{
int len=0;
int len2=0;
FILE* stream;
FILE* stream1;
FILE* stream2;
char buf[50];
char buf1[50];
char buf2[50];
char text[1024];

printf("input anfile path to open:");

scanf("%s",buf);
stream=fopen(buf,"r+");

fseek(stream,0,SEEK_END);
len=ftell(stream);
printf("the file %s length is %d!\n",buf,len);
len2 = len/2;

printf("intput 2 file name: \n");
scanf("%s%s",buf1,buf2);
fseek(stream,0,SEEK_SET);
stream1=fopen(buf1,"w+");
stream2=fopen(buf2,"w+");
fread(text,len2,1,stream);
fwrite(text,len2,1,stream1);
fread(text,len-len2,1,stream);
fwrite(text,len-len2,1,stream2);

fclose(stream);
fclose(stream1);
fclose(stream2);

return 0;
} 
int function2()
{
int len=0;
int len2=0;
FILE* stream;
FILE* stream1;

char buf[50];
char buf1[50];

char text[1024];

printf("input anfile path to open:");

scanf("%s",buf);
stream=fopen(buf,"r+");

fseek(stream,0,SEEK_END);

printf("intput another file name: \n");
scanf("%s",buf1);

stream1=fopen(buf1,"r+");
fseek(stream1,0,SEEK_END);
len=ftell(stream1);
fseek(stream1,0,SEEK_SET);
fread(text,len,1,stream1);
fwrite(text,len,1,stream);

fclose(stream);
fclose(stream1);
remove(buf1);//remove the another file

return 0;
}

//第二部：如果有条件的调用它们的话，加上if语句或者switch语句，基本上都是这样，此外，你可以把function1 和function2放入一个头文件中，然后包含这个头文件亦行。
void main()
{

function1();
function2();
}

 

Answer 2

不知道你的具体要求是什么，如果想从主函数调用这两个函数，把这两个函数名改完就可以了
#include<stdio.h>
//文件的分裂
int SplitFile ()//修改的地方
{
。。。。。 } 
文件的合并
#include<stdio.h>

int ConveFile()//修改的地方
{。。。
}
void main()
{
//如果是有条件的选择这两个函数的话，也可以加一些if语句
SplitFile（）；
ConveFile（）；
}