功能：实现两个整数的交换。
例如：给a和b分别输入：60和65，输出为：a=65 b=60
#include<stdio.h>
#include<conio.h>
void wwjt();
void fun(int *a,int *b)
{
/**********Program**********/
/********** End **********/
}
main()
{
int a,b;
printf("Enter a,b:");
scanf("%d%d",&a,&b);
fun(&a,&b);
printf("a=%d b=%d\n",a,b);
wwjt();
}
void wwjt()
{
FILE *IN,*OUT;
int a,b,n;
IN=fopen("in.dat","r");
if(IN==NULL)
{
printf("Read FILE Error");
}
OUT=fopen("out.dat","w");
if(OUT==NULL)
{
printf("Write FILE Error");
}
for(n=0;n<5;n++)
{
fscanf(IN,"%d%d",&a,&b);
fun(&a,&b);
fprintf(OUT,"a=%d b=%d\n",a,b);
}
fclose(IN);
fclose(OUT);
}
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