读文件的相关操作（读.dat文件）

#include<stdio.h> #include<string.h> typedef struct StudentInfo { char Id[10]; char Name[15]; int Sex; int Age; }StudentInfo; StudentInfo testStudentInfo[100]; int readdoc(char a[]) { int i=0; FILE *fp; if((fp=fopen(a,"rb"))==NULL) { printf("can't open it\n"); } while(!feof(fp))/*while(ch!=EOF))对于文本文件用这个*/ { fscanf(fp, "%s%s%d%d",&testStudentInfo[i].Id,&testStudentInfo[i].Name,&testStudentInfo[i].Sex,&testStudentInfo[i].Age); i++; } fclose(fp); return i; } int main() { int j=0; int i; char a[50]="E:\\c语言助教\\代码\\读dat文件\\1.dat"; i=readdoc(a); for(j=0;j<i-1;j++) { printf("%d %s %s %d %d \n",j,testStudentInfo[j].Id,testStudentInfo[j].Name,testStudentInfo[j].Sex,testStudentInfo[j].Age); } return 0; }