Submission #719

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
719	2013-03-01T10:42:42 Z	zyslee	최댓값 (tutorial2)	C++	Compilation error	0 ms	0 KB

tutorial2

#include<stdio.h>
int main(void)
{
	int n, a, b, i;
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
	scanf("%d %d", &n, &a);
	for(i=2;i<=n;i++){
		scanf("%d", &b);
		if(a<b) a = b;
	}
	printf("%d", a);
}

Compilation message

tutorial2.cpp: In function 'int main()':
tutorial2.cpp:5:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
tutorial2.cpp:6:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
tutorial2.cpp:7:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
tutorial2.cpp:9:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
/tmp/ccjpq8KB.o: In function `main':
tutorial2.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccZyFxnk.o:grader.cpp:(.text.startup+0x0): first defined here
/tmp/ccZyFxnk.o: In function `main':
grader.cpp:(.text.startup+0x97): undefined reference to `GetMax(int, int*)'
collect2: ld returned 1 exit status