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C Articles
Page 30 of 96
C Program for product of array
Given an array arr[n] of n number of elements, the task is to find the product of all the elements of that array.Like we have an array arr[7] of 7 elements so its product will be likeExampleInput: arr[] = { 10, 20, 3, 4, 8 } Output: 19200 Explanation: 10 x 20 x 3 x 4 x 8 = 19200 Input: arr[] = { 1, 2, 3, 4, 3, 2, 1 } Output: 144The approach used below is as follows −Take array input.Find its size.Iterate the array and Multiply each element of that arrayShow resultAlgorithmStart In function int prod_mat(int arr[], ...
Read MoreC Program for Reversed String Pattern
Given a string str, our task is to print its reversed pattern. The Pattern will be incremental in reversed order, and when the string is completed fill ‘*’ in the remaining places.Like we enter a string “abcd”, now in first line we have to print “a” then in next line we have to print “cb” and then in third line we will print “**d”.ExampleInput: str[] = { “abcd” } Output: a c b * * dExplanation −In first line print 1 characterIn second line print 2 characters in reverse orderIn third line Print 3 characters in reverse order, if the ...
Read MoreC Program to check if a number is divisible by any of its digits
Given a number n, task is to find that any of the digit in the number divides the number completely or not. Like we are given a number 128625 is divisible by 5 which is also present in the number.ExampleInput: 53142 Output: yes Explanation: This number is divisible by 1, 2 and 3 which are the digits of the number Input: 223 Output: No Explanation: The number is not divisible by either 2 or 3The approach used below is as follows −We will start from the unit place and take the unit place’s number.Check whether the number is divisible or ...
Read MoreC Program for replacing one digit with other
Given a number n, we have to replace a digit x from that number with another given number m. we have to look for the number whether the number is present in the given number or not, if it is present in the given number then replace that particular number x with another number m.Like we are given with a number “123” and m as 5 and the number to be replaced i.e. x as “2”, so the result should be “153”.ExampleInput: n = 983, digit = 9, replace = 6 Output: 683 Explanation: digit 9 is the first digit ...
Read MoreC Program for Arrow Star Pattern
Given a number n and we have to print the arrow star pattern of maximum n number of stars.The star pattern of input 4 will look like −ExampleInput: 3 Output:Input: 5 Output:The approach used below is as follows −Take input in integer.Then print n spaces and n stars.Decrement till n>1.Now increment till n.And print spaces and stars in increasing order.AlgorithmStart In function int arrow(int num) Step 1-> declare and initialize i, j Step 2-> Loop For i = 1 and i
Read MoreMCQ on Memory allocation and compilation process in C
Here we will see some MCQ questions on Memory Allocation and Compilation Processes.Question 1 − What will be the output of the following code −#include #include int main() { union my_union { int i; float f; char c; }; union my_union* u; u = (union my_union*)malloc(sizeof(union my_union)); u->f = 20.60f; printf("%f", u->f); }Options −Garbage Value20.600000Syntax Error20.6ExplanationUsing unions, we can use same memory location to hold multiple type of data. All member of union uses same memory location which has maximum space. Here float ...
Read MoreC/C++ Ternary Operator
Syntax of ternary operator is −(expression-1) ? expression-2 : expression-3This operator returns one of two values depending on the result of an expression. If "expression-1" is evaluated to Boolean true, then expression-2 is evaluated and its value is returned as a final result otherwise expression-3 is evaluated and its value is returned as a final result.ExampleLet us write a program to find maximum of two numbers using ternary operator.#include using namespace std; int main() { int a = 10; int b = 20; int max = a > b ? a : b; cout
Read MoreC program to print a string without any quote in the program
This is another tricky problem. In this program, we will see how to print a string using C where no quotation marks are used.Here we are using macro function. We are defining a macro function like#define getString(x) #xThe getString() is a macro function. It returns x by converting it into a string. The # before x is denoting that the function will convert x into a string.Input: Take one string without quote Output: Print that string into consoleAlgorithmStep 1:Take a string without quote Step 2: Use macro function to print it into a string Step 3: EndExample Code#include #define getString(x) ...
Read MoreConvert a floating point number to string in C
In this section we will see how to convert a number (integer or float or any other numeric type data) to a string.The logic is very simple. Here we will use the sprintf() function. This function is used to print some value or line into a string, but not in the console. This is the only difference between printf() and sprintf(). Here the first argument is the string buffer. where we want to save our data.Input: User will put some numeric value say 42.26 Output: This program will return the string equivalent result of that number like “42.26”AlgorithmStep 1 − ...
Read Moreexit() vs _Exit() function in C and C++
In this section we will see what are the differences between exit() and _Exit() in C and C++. In C the exit() terminates the calling process without executing the remaining code which is present after exit() function.In C++11, one new function is present called _Exit(). So what is the feature of this function? The exit() function performs some cleaning before terminating the program. It clears the connection termination, buffer flushes etc. This _Exit() function does not clean anything. If we test using atexit() method, it will not work.Let us see two examples where at first we are using exit() function, ...
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