What does sizeof(3.14) mean in c language

sizeof(3.14) represents the memory size required for double type floating point number 3.14 in C language, which is 8 bytes. This helps with dynamic memory allocation, ensuring that the allocated memory is sufficient to accommodate the data type.

sizeof(3.14) means in C language

sizeof(3.14) means double in C language Size of type float 3.14.

Detailed explanation:

In C language, the sizeof() operator returns the size of the memory space required for the specified data type or variable. When applied to a literal, it returns the size of the literal's data type.

3.14 is a double-precision floating point number, occupying 8 bytes of memory space in C language. Therefore, sizeof(3.14) returns 8.

Application:

sizeof(3.14) is usually used in dynamic memory allocation. For example:

double *p = malloc(sizeof(3.14)); // 分配一个可以容纳 double 类型浮点数的内存块

In the above example, the malloc() function will allocate enough space to store a double type value.

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