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Technical articles with clear explanations and examples
Explain dynamic memory allocation in C with an example
Dynamic memory allocation in C allows programmers to allocate and deallocate memory during program execution rather than at compile time. This provides flexibility to handle varying data sizes efficiently. Syntax void* malloc(size_t size); void* calloc(size_t num, size_t size); void* realloc(void* ptr, size_t new_size); void free(void* ptr); Dynamic Memory Allocation Functions The main functions used for dynamic memory allocation in C are − malloc() − allocates a block of memory in bytes at runtime calloc() − allocates continuous blocks of memory and initializes them to zero realloc() − used to resize previously allocated ...
Read MoreSet the style of the rule between columns with CSS
The CSS column-rule-style property is used to set the style of the rule (line) between columns in a multi-column layout. This property works in conjunction with column-count or column-width to create visual separators between columns. Syntax selector { column-rule-style: value; } Possible Values ValueDescription noneNo rule between columns (default) solidA solid line between columns dashedA dashed line between columns dottedA dotted line between columns doubleA double line between columns ridgeA 3D ridged border grooveA 3D grooved border Example: Dashed Column Rule The following example creates a ...
Read MorePost and Pre incremented of arrays in C language
In C programming, pre and post increment operators can be applied to array elements to modify their values. Understanding how these operators work with arrays is crucial for effective C programming. Syntax // Pre-increment: increment first, then use value variable = ++array[index]; // Post-increment: use value first, then increment variable = array[index]++; Pre-increment vs Post-increment Increment operator (++) − It is used to increment the value of a variable by 1 There are two types of increment operators − pre increment and post increment Pre-increment (++variable): Increment operator is placed before ...
Read MoreSet a rounded active and hover button with CSS
The CSS :hover pseudo-class allows you to add interactive effects when users hover over elements, while the border-radius property creates rounded corners. Combining these with the .active class creates visually appealing navigation buttons with distinct states. Syntax /* Hover effect */ selector:hover { property: value; } /* Active state */ selector.active { property: value; } /* Rounded corners */ selector { border-radius: value; } Example: Rounded Active and Hover Buttons The following example creates a navigation menu with rounded buttons ...
Read MoreMatrix row sum and column sum using C program
In C programming, calculating the sum of rows and columns in a matrix is a fundamental operation. This involves iterating through each row to compute row sums and through each column to compute column sums using nested loops. Syntax for(i=0; i
Read MoreCSS shorthand property for the flex-grow, flex-shrink, and the flex-basis properties
The CSS flex property is a shorthand that combines flex-grow, flex-shrink, and flex-basis properties in a single declaration. It controls how flex items grow, shrink, and their initial size within a flex container. Syntax selector { flex: flex-grow flex-shrink flex-basis; } Possible Values PropertyDescriptionDefault Value flex-growHow much the item should grow (number)0 flex-shrinkHow much the item should shrink (number)1 flex-basisInitial size before growing/shrinkingauto Example The following example demonstrates how the flex property affects item sizing within a flex container − ...
Read MoreHow to print the numbers in different formats using C program?
In C programming, we can print numbers and symbols in different patterns like pyramids and triangles using nested loops. The outer loop controls the rows while inner loops handle spacing and pattern generation. Syntax for(int i = 1; i
Read MoreRole of CSS flex-direction property column value
The CSS flex-direction: column property arranges flex items vertically in a column layout, stacking them from top to bottom. This is the opposite of the default row direction which arranges items horizontally. Syntax selector { display: flex; flex-direction: column; } Example The following example demonstrates how to create a vertical layout using flex-direction: column − .mycontainer { display: flex; flex-direction: ...
Read MoreExplain Compile time and Run time initialization in C programming?
In C programming, array initialization can occur at two different times: compile time and run time. Understanding the difference between these two approaches is crucial for effective memory management and program design. Syntax // Compile time initialization type array_name[size] = {value1, value2, ..., valueN}; // Run time initialization type array_name[size]; // Values assigned during program execution Compile Time Initialization In compile time initialization, array values are specified directly in the source code when the array is declared. The compiler allocates memory and assigns values during the compilation process − #include ...
Read MoreShorthand CSS property for flex-direction and flex-wrap
The CSS flex-flow property is a shorthand property that combines flex-direction and flex-wrap into a single declaration. This property allows you to control both the direction of flex items and whether they wrap to new lines. Syntax selector { flex-flow: flex-direction flex-wrap; } Possible Values ValueDescription flex-directionSets the direction: row, row-reverse, column, column-reverse flex-wrapSets wrapping: nowrap, wrap, wrap-reverse Example: Column Direction with Wrapping The following example uses flex-flow: column wrap to arrange items vertically with wrapping − ...
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