c-onfusion

gistfile1.c

#define BUFFER_SIZE 4

struct message {
	int content;
};
struct message buffer[BUFFER_SIZE];

int main() {
	int i;
	printf("allocated buffer, have done nothing with it");
	printBuffer();

	for (i=0; i<BUFFER_SIZE; i++) {
		struct message m = buffer[i];
		m.content = 99;
	}
	printf("assignment sequence 1");
	printBuffer();


	for (i=0; i<BUFFER_SIZE; i++) {
		buffer[i].content = 99;

	}
	printf("assignment sequence 2");
	printBuffer();
}


output from running this program:

>>>allocated buffer, have done nothing with it[0,0,0,0,]
>>>assignment sequence 1[0,0,0,0,]
>>>assignment sequence 2[99,99,99,99,]