C remove() function
C library function - remove()
The remove() function is used to delete a given file, named by the pathname pointed to by path.
Syntax:
int remove(const char *filename)
remove() function Parameters:
Name | Description | Required /Optional |
---|---|---|
filename | The name of filename to be removed... | Required |
Return value from remove() function:
- The remove() function returns 0 if it successfully deletes the file.
- A nonzero return value indicates an error.
Example: remove() function
The following example shows how to remove access to a file named /home/test.txt:
#include <stdio.h>
#include <string.h>
int main () {
int status;
char filename[] = "e:/test.txt";
status = remove(filename);
if(status == 0) {
printf("File deleted successfully");
} else {
printf("Error: unable to remove the file");
}
return(0);
}
Output:
File deleted successfully
C Programming Code Editor:
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C Programming: Tips of the Day
Reading a string with scanf :
An array "decays" into a pointer to its first element, so scanf("%s", string) is equivalent to scanf("%s", &string[0]). On the other hand, scanf("%s", &string) passes a pointer-to-char[256], but it points to the same place.
Then scanf, when processing the tail of its argument list, will try to pull out a char *. That's the Right Thing when you've passed in string or &string[0], but when you've passed in &string you're depending on something that the language standard doesn't guarantee, namely that the pointers &string and &string[0] -- pointers to objects of different types and sizes that start at the same place -- are represented the same way.
Ref : https://bit.ly/3pdEk6f
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