In general programs store data into files and retrieve existing data from files. With the sequential access file such data saved in a sequential pattern. When retrieving data from such files each data needs to read one by one until the required information found.

yes, the const means that the variable cannot be assigned a new value. The value can be changed by other code or pointer. For example the following program works fine. int main(void) { const volatile int local = 10; int *ptr = (int*) &local; printf(“Initial… Read More »Can a variable be both const and volatile?

The volatile keyword is intended to prevent the compiler from applying any optimizations on objects that can change in ways that cannot be determined by the compiler. Objects declared as volatile are omitted from optimization because their values can be changed by code outside the… Read More »What is volatile keyword?

When the Header file includes within double quotes (“”), compiler search first in the working directory for the particular header file. If not found then in the built-in the include path. But when the Header file includes within angular braces (<>), the compiler only searches… Read More »What is the behavioral difference when include header file in double quotes (“”) and angular braces ()?

The purpose of the Break keyword is to bring the control out of the code block which is executing. It can appear only in Looping or switch statements.

We can use recursion for this purpose. void printNos(unsigned int n) { if(n > 0) { printNos(n-1); printf(“%d “, n); } }  

A loop running within another loop is referred to as a nested loop. The first loop is called the Outer loop and inside the loop is called the Inner loop. The inner loop executes the number of times define an outer loop.

This concept called commenting out and is the way to isolate some part of the code which scans possible reason for the error. Also, this concept helps to save time because if the code is not the reason for the issue it can simply uncomment.

#define my_sizeof(type) (char *)(&type+1)-(char*)(&type)  

Pointers are used for storing address of dynamically allocated arrays and for arrays which are passed as arguments to functions. In other contexts, arrays and pointer are two different things.   Array name gives address of first element of array. Array members are accessed using pointer… Read More »What is the difference between array and pointer?