fopenreturnvalue

RETURNVALUE.Uponsuccessfulcompletion,fopen()shallreturnapointerto...Thefopen()functionreturnsafilepointerthatisusedinsubsequentfgets ...,2018年11月24日—Iffopensucceedsitwillreturnanon-nullpointertoaFILEstructure.TheFILEstructureisanopaquedatatype,ablackboxofunknown ...,2013年3月12日—Itreturnseitheraresourceorbooleanfalse.Resourcesareknownasaspecialtypeandareexplainedindetailhere.,,2023年9月30...

參考資訊如下
fopen

RETURN VALUE. Upon successful completion, fopen() shall return a pointer to ... The fopen() function returns a file pointer that is used in subsequent fgets ...

What does fopen() return to the file pointer if file is opened?

2018年11月24日 — If fopen succeeds it will return a non-null pointer to a FILE structure. The FILE structure is an opaque data type, a black box of unknown ...

what does fopen return?

2013年3月12日 — It returns either a resource or boolean false. Resources are known as a special type and are explained in detail here.

Function Descriptions : fopen

fopen() Returned Value

2023年9月30日 — Returns a pointer to the object controlling the associated stream. A NULL pointer returned value indicates an error. The fopen() function ...

fopen() — Open Files

Return Value. The fopen() function returns a pointer to a FILE structure type that can be used to access the open file. Note: To use stream files (type ...

C fopen() Function With Examples

2024年1月24日 — Return Value. The function is used to return a pointer to FILE if the execution succeeds else NULL is returned. Example of fopen(). On running ...

C library function

Opens a file for reading and appending. Return Value. This function returns a FILE pointer. Otherwise, NULL is returned and the global variable errno is set to ...

C fopen

Return Value. C fopen() function returns NULL in case of a failure and returns a FILE stream pointer on success. Example: Copy Code. #include<stdio.h> int ...