eof

问题 I have a problem with reading the EOF character for the last input in C j=0; while(*(name2+j)!='\n'){ if(*(name2+j) == ' '){ j++; continue; } d[tolower(*(name2+j))]++; j++; } For the last input, there is no new line character, the value of j is getting set to very large number for a very small string. So, to consider the end of file, i modified the while condition to while(*(name2+j)!='\n' && (*(name2+j))!=EOF) but still i am having the same problem. Can someone tell if i am missing something

问题 *Note: I'm using windows, so EOF is ctrl + Z for me. For a while I've noticed an EOF input seems to behave differently in isolation than it does when accompanied by other input. For example, ^Z (the EOF command for windows in command prompt) and a^Z seem to cause different behavior in the following code: #include <stdio.h> #define MAX 1000 int getline(char s[]); main() { int line; char arr[MAX]; while( (line = getline(arr)) != EOF) printf("%s",arr); system("Pause"); return 0; } int getline

问题 After pressing Ctrl+D, i am expecting this code to print array, but its doing nothing. #include<stdio.h> int main(){ int k,i=0,a; int b[10]; while(scanf("%d",&a)!=EOF){ if(a>(a/4+a/3+a/2)) b[i]=a; else b[i]=(a/4+a/3+a/2); i++; } for(k=0;k<=i;k++){ printf("%d\n",b[k]); } return 0; } 回答1: You're using the wrong key combination to generate an EOF on your operating system (Windows 8). Ctrl + D is common on unix-like systems, but Windows systems generally use Ctrl + Z . Note that you might have to

问题 I'm writing a program in C on my MacBook which uses Mojave and I'm trying to use fgets() to get a string from stdin. My code compiles - the only issue is that when I run the program in the terminal, after fgets() is called and I type in the desired input, I can't figure out how to signal the end of the input so that the program can continue running. I recognise many people have had this issue and that there are many pages on this site addressing it. But none of the solutions (that I have

问题 Here is the code: string fname = "/home/jack/example.csv"; ifstream csvin(fname.c_str()); if (csvin.eof()) { do_something; } My question is: In what case eof() returns true. I have the following options: File does not exist. File is empty. File either does not exist or it is empty. Unfortunately documentation does not help since I do not know eofbit error state flag means. I also do not understand what End-of-File is reached in the sequence associated with the stream mean. I assume that c_str

问题 I know that in linux's terminal, it's ctrl+D. I also searched that in OSX's terminal. Someone said it's Control+Q, Control+D,return. But this 3 step command doesn't work on my computer. 回答1: Just use Ctrl-D, it would do the work in any terminal. 来源： https://stackoverflow.com/questions/15848134/how-to-signal-eof-of-stdin-when-in-mac-osx-terminal

问题 std::fstream fin("emptyFile", std::fstream::in); std::cout << fin.eof() << std::endl; This prints 0 . So using eof function I can't check if file is empty. Or after reading some data I need to check if there is no more data in it. 回答1: There are two ways to check if you "can read something" from a file: Try to read it, and if it fails, it wasn't OK... (e.g fin >> var; ) Check the size of the file, using fin.seekg(0, ios_base::end); followed by size_t len = fin.tellg(); (and then move back to

问题 Test In order to find the behaviour of getline() when confronted with EOF, I wrote the following test: int main (int argc, char *argv[]) { size_t max = 100; char *buf = malloc(sizeof(char) * 100); size_t len = getline(&buf, &max, stdin); printf("length %zu: %s", len, buf); } And input1 is: a b c Ctrl-D Enter Result: length 4: abc //notice that '\n' is also taken into consideration and printed Input2: a b c Enter Exactly same output: length 4: abc It seems that the EOF is left out out by

问题 Im getting the EOF at the end of the program when i try to run it. i dont really know how to fix it. at first i was getting "if" as an invalid syntax but i think i was able to fix that. thanks for the help while True: try: print("Do you want to enter a number?") print("y - yes") print("n - no") choice = int(input("Enter here: ")) if choice == y: print("") count = number for indice in range(1,number + 1, 1): print(number + indice) print("") print("All done") 回答1: You're missing a except to

问题 Why is my PHP script hanging? $path = tempnam(sys_get_temp_dir(), '').'.txt'; $fileInfo = new \SplFileInfo($path); $fileObject = $fileInfo->openFile('a'); $fileObject->fwrite("test line\n"); $fileObject2 = $fileInfo->openFile('r'); var_dump(file_exists($path)); // bool(true) var_dump(file_get_contents($path)); // string(10) "test line // " var_dump(iterator_count($fileObject2)); // Hangs on this If I delete the last line ( iterator_count(... ) and replace it with this: $i = 0; $fileObject2-