Thread: getchar() and putchar()

Post your code --in Code tags please.
None of us are mind readers.

What do you mean by "input a long character string"? Is this part of the program reading characters from stdin? By it self putchar shouldn't print the entire string. Can you post some code where this is occurring?

Given the code you have now posted. Putchar does in fact print one character at the time! The character just read with getchar.

First, instead of:

Code:

main()

---Use:

int main()

Additionally,
function main() should be terminated with a return value:

Code:

int main()
{
    ...
    return 0;
}

In your code, you created a loop that continuously reads one character after another.

Code:

    while (c!=EOF)
    {
        putchar(c);
        c = getchar();
    }

getchar() does read-in a single character.
In a loop, as you have here, it keeps doing it, over and over.
The same with putchar(), it keeps doing it, over and over.