Submission #14079

#	Time	Username	Problem	Language	Result	Execution time	Memory
14079		sleep4725	최댓값 (tutorial2)	C11	Compilation error	0 ms	0 KiB

tutorial2

#include<stdio.h>
#include<stdlib.h>
int main(void)
{
	int i;
	int a;
	int max = 0;
	scanf("%d", &a);
	int* arr = NULL;
	arr = (int*)malloc(sizeof(int)*a);
	for (i = 0; i < a; i++)
	{
		scanf("%d", &arr[i]);
	}
	max = arr[0];
	for (i = 1; i < a; i++)
	{
		if (max < arr[i])
		{
			max = arr[i];
		}
	}
	printf("%d\n", max);
	return 0;
}

Compilation message (stderr)

tutorial2.c: In function ‘main’:
tutorial2.c:8:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &a);
  ^
tutorial2.c:13:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &arr[i]);
   ^
/tmp/ccKWk84j.o: In function `main':
tutorial2.c:(.text.startup+0x0): multiple definition of `main'
/tmp/ccxibryW.o:grader.c:(.text.startup+0x0): first defined here
/tmp/ccxibryW.o: In function `main':
grader.c:(.text.startup+0x97): undefined reference to `GetMax'
collect2: error: ld returned 1 exit status