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1. Dont copy space nor new line srcpy in c update#
2. Dont copy space nor new line srcpy in c code#
3. Dont copy space nor new line srcpy in c Pc#

Printf("Enter another string less than 100 characters.\n") įor starters the function gets is unsafe and is not supported by the C Standard. Printf("Enter a string less than 100 characters.\n") This is what I have, but nothing shows up. Page created by G.This program is meant to take two strings and call a function that copies string 1 into string2, and vice versa, while fulfilling the following criteria: Have questions about this code? Comments? Did you find a bug? Let me know! 😀 There is also a nice answer in this Stackoverflow question. I suggest taking a look at my relevant answer in Stackoverflow too. Notice that in the first scanf, there is no need for a space before %c, since it’s the first input function, thus there is no trailing newline to eat, as discussed in the comments section below my post. That way you say to scanf to automatically eat whitespaces and special characters, like enter! So, just change scanf(“%c”, &c) to scanf(” %c”, &c) and you will be just fine. Luckily enough, the “fix to scanf to do what you intend it to do” is to leave a space before %c. Logical, isn’t it? Whitespaces and special characters are characters, not numbers! However, %c has to interpret whitespaces and special characters as inputs, because %c reads characters 😉. Correct! Why? Because %d automatically eats whitespaces and special characters. However, many would think now that, “Wait a minute… I do this while reading numbers, with %d for example and I had no problem”. If we had a fourth scanf, then it would read the enter. a is been assigned to variable c and enter remains in the stdin buffer, ready to be read by the next scanf. Then the third scanf waits for a key press. Second scanf will read the enter! That’s why, the second printf of the value of c leaves just a newline after “c=”. First prompt message arrives, you type s and then what? You hit enter! Enter is a character!Īs a result, first scanf will read the s. But the intention of the programmer is usually to get three characters from the user, which is what is happening, isn’t? Let me explain.

Dont copy space nor new line srcpy in c code#

Usually, this happens inside a loop, but let’s see a sample code without a loop that exposes the problem.Īs you see, the input No.2 was skipped. Quite often I see the following problem in people’s code ( as a matter of fact, aliens don’t do that mistake :p ), when trying to input a character again and again with scanf.

Dont copy space nor new line srcpy in c Pc#

2-node Hadoop Cluster with pc and virtualbox.Find k max elements in array of N size (C/C++).

Dont copy space nor new line srcpy in c update#

Read_file, update only a part of a file (C++).Determine where two circles intersect ( C++).

Returning local variable and accessing uninitialized variable.2D dynamic array in continuous memory locations (C).Difference between two doubles is wrong (C++).Quicksort (C++/ Java/ C/ Prolog / javaScript).Caution when reading char with scanf (C).Swap without using extra variable (C++).