i am writing a program in c,c++... I want to read one file and write its contents using fread and fwrite functions. the program i hv written has no errors. but output file is not same as that of read file. main() of program is like this... vo
言不在多！fread&&fwrite,都是以二进制方式，操作（读或写）文件的 你的文件，貌似是文本类型，用gets或fscanf等，对齐进行操作，更简单点 if(strcmp(login.Account,Test.Account))是两者不等的意思，相等应该这样写：if(strcmp(login.Account,Test.Account)==0)如果输入的正确，那估计是你读入的不对...
fwrite()实际上它两的参数值都一样,这里就不再说了↓ size_t fwrite ( const void * ptr, size_t size, size_t count, FILE * stream ); 不对,还是有不一样的,不知道你发现了没有 doge (oﾟvﾟ)ノ 🍑🍑🍑fwrite()🍚fread()代码示例🍑🍑🍑 fwrite()代码示例如下↓ #define _CRT_S...
fwrite(&stud[0], sizeof(struct Student_type) , 3, fp);fclose(fp);fp = fopen("test.abc", "r");if(!fp){ printf("open file fail \n");} fread(&temp[0], sizeof(struct Student_type) , 3, fp);for(i = 0; i < 3; i++){ printf("Name is:%s\n", temp[i]....
Syntax of fwrite() Function in C size_t fwrite(const void* ptr, size_t size, size_t nmemb, FILE* stream); Parameter: ptr: Description: A pointer to the array or memory block where the data to be written is stored. Type: const void* ...
bsize;fp=fopen("c:/book/1.mp3","rb");fpw=fopen("c:/book/2.mp3","wb");if(fp==NULL){ printf("can not open file\n");} temp[1023]='\0';while(!feof(fp)){ bsize = fread(temp,1,sizeof(temp)-1,fp);fwrite(temp,1,bsize,fpw);} fclose(fp);fclose(fpw);} ...
fread 只用于 2进制方式 fwrite 写成的文件,打开文件时要有 "rb".不能用于你上面写成的文本文件。(4) 读你fp1=fopen("in.txt","w") 写成的文件 要用 fp1=fopen("in.txt","r") 打开 , 用 fscanf 读取。(5) 要用fread 读取， 你原来的文件 必须 用 "wb" 方式打开 和 用 fwrite ...
(fwrite(arr1,sizeof(int),5,f))!=5){printf("File write error...\n");}//close the filefclose(f);//open the file for read operationif((f=fopen("includehelp.txt","r"))==NULL){//if the file does not exist print the stringprintf("Cannot open the file...");exit(1);}//rea...
in = fopen("c:\\in.txt","rb"); /*注意这里*/ out = fopen("c:\\out.txt","wb"); /*注意这里*/ n=fread(c,sizeof(char),40,in);/*注意这里*/ fwrite(c,sizeof(char),n,out);/*注意这里*/ fclose(out);/*注意这里*/ fclose(in);/*注意这里*/ exit(0);} //---...
用fprintf（）吧，这个直接一下子就搞过去