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#include<stdio.h>
 
int openfile(char *s,FILE *fp)
{
	fp=fopen(s,"r");
	printf("fp===%d\n",fp);
	return fp?1:0;
}
#if 1
int main()
{
	FILE *fp;
	if(openfile("./readme.txt",fp))
	{
		printf("hello world\n");
		fclose(fp);
	}
	system("pause");
	return 0;
}
#endif

Main.java:1: error: illegal character: '#'
#include<stdio.h>
^
Main.java:1: error: class, interface, or enum expected
#include<stdio.h>
        ^
Main.java:6: error: class, interface, or enum expected
	printf("fp===%d\n",fp);
	^
Main.java:7: error: class, interface, or enum expected
	return fp?1:0;
	^
Main.java:8: error: class, interface, or enum expected
}
^
Main.java:9: error: illegal character: '#'
#if 1
^
Main.java:13: error: class, interface, or enum expected
	if(openfile("./readme.txt",fp))
	^
Main.java:16: error: class, interface, or enum expected
		fclose(fp);
		^
Main.java:17: error: class, interface, or enum expected
	}
	^
Main.java:19: error: class, interface, or enum expected
	return 0;
	^
Main.java:20: error: class, interface, or enum expected
}
^
Main.java:21: error: illegal character: '#'
#endif
^
12 errors

Standard output is empty