1 files changed, 48 insertions, 0 deletions
diff --git a/1.2/friday.c b/1.2/friday.c
new file mode 100644
index 0000000..c0b2ceb
--- /dev/null
+++ b/1.2/friday.c
@@ -0,0 +1,48 @@
+/*
+ID: mytbk921
+LANG: C
+TASK: friday
+*/
+
+#include <stdio.h>
+
+int isleap(int year)
+{
+	if (year%4==0 && (year%100!=0 || year%400==0))
+		return 1;
+	else
+		return 0;
+}
+
+const int DaysOfMonth[2][12]={{31,28,31,30,31,30,31,31,30,31,30,31},{31,29,31,30,31,30,31,31,30,31,30,31}};
+
+int main()
+{
+	int n; //years eclipsed
+	int year;
+	int nDays[7]={0}; //number of Sat. to Fri.
+	int wDay=2+12; //the week day,1900.01.01 is Monday(2)
+	int i;
+	FILE *fin=fopen("friday.in","r");
+	FILE *fout=fopen("friday.out","w");
+	
+	fscanf(fin,"%d",&n);
+	for (year=1900;year<1900+n;year++){
+		int type=isleap(year); 
+		for (i=0;i<12;i++){
+			wDay%=7;
+			nDays[wDay]++;
+			wDay+=DaysOfMonth[type][i];
+		}
+	}
+	for (i=0;i<7;i++){
+		if (i)
+			fputc(' ',fout);
+		fprintf(fout,"%d",nDays[i]);
+	}
+	fputc('\n',fout);
+	fclose(fin);
+	fclose(fout);
+	return 0;
+}
+