How much bytes is a double in an array and char in an array?-CodePudding

So every element in an array is 4 bytes. And every double takes up 8 bytes. So does a double in an array also takes 8 bytes?

Similarly, char is 1 byte. So is a char in an array just 1 byte?

CodePudding user response：

It's depend on your programming language,if you mean the C language,differ type of array will cost differ usage. You can check by sizeof()

char x[]={'p','c','n','o','p','r','o','b','l','e','m'};
printf("％d",sizeof(x));


return 0;

CodePudding user response：

So every element in an array is 4 bytes.

That is incorrect. Every element is the same size as the array's element type. The total size of an array of N number of T elements is sizeof(T) * N.

every double takes up 8 bytes. So does a double in an array also takes 8 bytes?

Yes. So, if you have an array of 5 doubles, for instance, then the array is sizeof(double)*5 = 8*5 = 40 bytes in size.

Similarly, char is 1 byte. So is a char in an array just 1 byte?

Yes. So, if you have an array of 5 chars, for instance, then the array is sizeof(char)*5 = 1*5 = 5 bytes in size.