![]() The name "calloc" stands for contiguous allocation. The expression results in a NULL pointer if the memory cannot be allocated. And, the pointer ptr holds the address of the first byte in the allocated memory. It's because the size of float is 4 bytes. The above statement allocates 400 bytes of memory. Syntax of malloc() ptr = (castType*) malloc(size) Įxample ptr = (float*) malloc(100 * sizeof(float)) ![]() And, it returns a pointer of void which can be casted into pointers of any form. The malloc() function reserves a block of memory of the specified number of bytes. The name "malloc" stands for memory allocation. ![]() These functions are defined in the header file. To allocate memory dynamically, library functions are malloc(), calloc(), realloc() and free() are used. This is known as dynamic memory allocation in C programming. To solve this issue, you can allocate memory manually during run-time. ![]() Sometimes the size of the array you declared may be insufficient. Once the size of an array is declared, you cannot change it. As you know, an array is a collection of a fixed number of values. ![]()
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