fp=fopen("SAVE.txt","rb"))==NULL

fp=fopen("SAVE.txt","rb"))==NULL fp=fopen(p, fp=fopen(p, fp=fopen(DATA_KEHU, c语言编程计算数列合#include <stdio.h> #include <math.h> void main(){ FILE *fp; double y,t=1;int i=1; /****考生在以下空白处写入执行语句/ printf("%f ",y); fp=fopen("CD1.dat","wb") if ((fp==fopen(filename,w))==NULL) 改为 if ((fp=fopen(filename,w))==NULL) 为什么改完之后就会行 if((fp=fopen(text.txt,ab+))==NULL)其中ab+啥意思 if ((fp=fopen(date.txt,r))==NULL)是什么意思? fp=fopen(e:\subjectsdel.txt,w))==NULL是什么意思急 fp=fopen(argv[2],wb );fy=my-y[i];while(a50);staticboolfunc_text_load(void); if ((fp=fopen(student.bin,wb))==NULL) if (fwrite(&student[i],sizeof(struct address),1,fp)!=1) int open_font(){FILE *fp;handle=fopen(.fnt,rb);if(handle==NULL)hz16CHAR16=(char *)malloc(4100)return 0;;if(CHAR16==NULL)return 0;fp=fopen(char16.fnt,rb);if(fp==NULL)return 0;fread(CHAR16,1,4096,fp);fclose(fp); c(7) :warning C4996:'gets':This function or variable may b vc2008#include#includemain(){FILE *fp;char str[81],name[10];gets(name);if((fp=fopen(name,w))==NULL){printf(can not open );exit(0);}gets(name);fputs(str,fp);flose(fp);if((fp=fopen(name,r 帮忙解释下下面几句c语言的意思,fp=fopen(test.dat,wb); fwrite(x,si...帮忙解释下下面几句c语言的意思,fp=fopen(test.dat,wb);fwrite(x,sizeof(int),3,fp);rewind(fp);fread(x,sizeof(int),3,fp);最好能连语句括号内的 代码if((fp=fopen(filename,r))==NULL) { fprintf(stderr,Error opening file.); exit(1); }是什么意思? if((fp=fopen(d=\jrzh\example\stu-list,wb+))==NULL)中的NULL前面的==两个等号是什么意思? if((fp=fopen(date.txt,w))==NULL) { printf(File open error! ); exit(0);能不能解释下什么意思, if(fp = fopen(bank_txt,w) == NULL) { printf(can not open file. ); exit(0); }文件打开一定要这个格式吗?