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. 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. Tic Tac Toe Object Oriented Programming C++.Crosssection with traffic lights Object Oriented Programming.Create Pointset on a Sphere or a Klein bottle.Spark – Container exited with a non-zero exit code 143.Proper position in front of the computer.2-node Hadoop Cluster with pc and virtualbox.Find k max elements in array of N size (C/C++).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++).Printf("Please enter your first name and your age. * Ask the user to enter their first name and age */ Let's look at an example to see how you would use the scanf function in a C program: /* Example using scanf by */ In the C Language, the scanf function can be used in the following versions: In the C Language, the required header for the scanf function is: #include Applies To If an error occurs or end-of-file is reached before any items could be read, it will return EOF. The scanf function returns the number of characters that was read and stored. Reads a floating-point number in either fixed decimal or exponential format depending on the size of the number Reads a floating-point number in exponential (scientific notation) Reads a floating-point number with 1 digit after the decimal Reads a floating-point number in fixed decimal format
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