顿然醒悟

顿然醒悟

我现在有突然觉得使用行指针比较方便。但不太懂怎么用

醒悟啥了？

十分感谢大家的赐教 ，我已经成功完成了课设，但我又换了一种方法，以下是代码，大家看看是不是可以更精简，或有没有问题bug：
以下只是部分代码，希望大家可以大体看明白什么意思：
int AddfromText(struct Records records[],int m,char filename[]){
    int i,j;
    FILE *fp1;
 
    if((fp1=fopen(filename,"r+"))==NULL){
        printf("Can not write !\n");
        exit(2);
    }
    for(i=0;!feof(fp1);i++){                    //feof()函数判断文件是否结尾
        fscanf(fp1,"%s%d%s%d%d%d%d",records[m+i].driver,&records[m+i].car,records[m+i].driver,&records[m+i].car,records[m+i].police,&records[m+i].num,&records[m+i].year,&records[m+i].month,&records[m+i].date);
          //结构体的变量相应的增多了
    }
    for(j=0;j<i-1;j++){
        Insert(records,m,records[m+j]);  //已经定义了的有序插入函数
    }
    for(j=0;j<m+i-1;j++){
        printf("%s\t%d\t%s\t%d\t%d\t%d\%d\n",records[j].driver, records[j].car,records[j].driver,records[j].car,records[j].police,records[j].num,records[j].year,records[j].month,records[j].date);
    }
    fclose(fp1);
    return (m+i-1);
   
}
void WritetoText(struct Records records[],int m,char filename[]){
    FILE *fp2;
    int i=0;

    if((fp2=fopen(filename,"a"))==NULL){
        printf("Can not write !\n");
        exit(2);
    }
    for(i=0;i<m;i++){
         fprintf(fp2,"\n%s\t%d\t%s\t%d\t%d\t%d\%d",records[i].driver,records[i].car,records[i].driver,records[i].car,records[i].police,records[i].num,records[i].year,records[i].month,records[i].date);
         fprintf(fp2,"\n");
    }
    fclose(fp2);
}