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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4.  
  5. 	int month;
  6.     int week;
  7.     int day = 1;
  8.     int lastday[100] = { 31,31,31,31,31,31,31,31,31,31,31,31 };
  9.  
  10.     do{
  11.     	printf("何月ですか:");
  12.     	scanf("%d",&month);
  13.  
  14.     	if(month < 1 && month > 12)
  15.     	printf("\nそんな月はありませんよ.\n");
  16.  
  17.  
  18.     }while(month < 1 && month > 12);
  19.  
  20.     do{
  21.  
  22.     	printf("\n%d月1日は何曜日ですか<0~6の数で入力、0が日曜日>:\n",month);
  23.     	scanf("%d",&week);
  24.  
  25.     	if(week < 0 && week > 6)
  26.     	printf("\n0~6までの数を入力してください.\n");
  27.  
  28.     }while(week < 0 && week > 6);
  29.  
  30.  
  31.     for(int i = 0; i < week; i++){
  32.  
  33. 	printf(" ");
  34.  
  35.     }
  36.  
  37.     for(int i = 0; i < lastday[month]; i++){
  38.  
  39.  
  40. 	printf("%3d" , day);
  41.  
  42.     if((day + week) % 7 == 0)
  43.     printf("\n");
  44.  
  45.     day++;
  46.  
  47.     }
  48.  
  49. 	return 0;
  50. }
  51.  
Success #stdin #stdout 0s 2172KB
comments (?)
stdin
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Standard input is empty
stdout
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何月ですか:
0月1日は何曜日ですか<0~6の数で入力、0が日曜日>:
  1  2  3  4  5  6  7
  8  9 10 11 12 13 14
 15 16 17 18 19 20 21
 22 23 24 25 26 27 28
 29 30 31
https://ideone.com/F3kPvS
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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