How to clear input buffer after fgets overflow?
c, fgets, overflow
Solution
If I understood correctly, looks like you want to avoid twice enter press, when entered input is within range.
A work around would be
for(index = 0; index < max; index++)
{
printf(" Enter the %d th string :",index);
// if (strlen(input) >=MAXLEN )
if(fgets(input,MAXLEN,stdin))
{
removeNewLine(input);
if(strcmp(input,"end") != 0)
// Do something with input
;
}
if (strlen(input) == MAXLEN-1 )
while((ch = getchar())!='\n' && ch != EOF );
}
With a limitation that it will again ask for two times enter when entered characters are exactly MAXLEN-2.
Or else you can simply form your `input` using character by character input.
Problem
I'm facing a little problem with fgets when the input string exceeds its predefined limit. Taking the example below: ``` for(index = 0; index < max; index++) {printf(" Enter the %d string : ",index+1) if(fgets(input,MAXLEN,stdin)) { printf(" The string and size of the string is %s and %d \n",input,strlen(input) + 1); removeNewLine(input); if(strcmp(input,"end") != 0) { //Do something with input } } ``` Now when I exceed the length MAXLEN and enter a string, I know that the input will append a '\0' at MAXLEN -1 and that would be it. The problem happens when I try to enter the 2nd string which is not asked for i.e ``` Output : Enter the first string : Aaaaaaaaaaaaaaaaaaaa //Exceeds limit Enter the second string : Enter the third string : ....Waits input ``` So, I thought I should clear the buffer the standard way as in C. It waits until I enter ``` return ``` two times, The first time it being appended to the string and the next time,expecting more input with another return. 1. Is there any method by which I can clear the buffer without entering the extra return? 2. How do I implement error handling for the same? Because the fgets return value will be Non-null and strlen(input) gives me the accepted size of the string by fgets, what should be done? Thanks a lot