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#include <stdio.h>
#include <stdlib.h>
struct student{
char name[20];
int id;
int mat,chs,eng,sum,ave;
};
struct student stud[5];
int main(void)
{
int i,j,sum,ave;
struct student temp;
char name[20];
FILE *fp;
if((fp=fopen("f3.txt","w")) == NULL){
printf("File open error!\n");
exit(0);
}
for(i=0;i <5;i++){
gets(name);
scanf("%d%d%d%d%d",&stud[i].id,&stud[i].mat,&stud[i].chs,&stud[i].eng);
fprintf(fp,"%s ",name);
fprintf(fp,"%d %d %d %d",stud[i].id,stud[i].mat,stud[i].chs,stud[i].eng);
}
if(fclose(fp)){
printf("can not close the fil
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#include"stdio.h"
#include"stdlib.h"
void ContrTwo(char i)
{
char str1[8];
itoa(i,str1,2);
printf("%s",str1);
}
unsigned char leftRot(char str,int i);
unsign ......
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execl("/opt/java1.5/bin/java","MyClass",NULL);
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