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1 | #include <stdio.h> | |
2 | #include <stdlib.h> | |
3 | ||
4 | int leap(int x){ | |
5 | if(x%4 == 0 && x%100 != 0 || x%400 == 0) | |
6 | return 1; | |
7 | else | |
8 | return 0; | |
9 | } | |
10 | ||
11 | int pastDays(int m, int d, int y){ | |
12 | - | int days[] = {31,28,31,30,31,30,31,30,31,30,31}; |
12 | + | |
13 | int i, past = 0; | |
14 | ||
15 | if(leap(y)){ | |
16 | days[1] = 29; | |
17 | } | |
18 | ||
19 | for(i = 0; i < m-1; i++){ | |
20 | past = past + days[i]; | |
21 | } | |
22 | return past + d; | |
23 | } | |
24 | ||
25 | int daysPast(int d, int y) { | |
26 | int days[] = {31,28,31,30,31,30,31,31,30,31,30,31}; | |
27 | ||
28 | int i, temp = 0; | |
29 | ||
30 | if(leap(y)){ | |
31 | days[1] = 29; | |
32 | } | |
33 | ||
34 | for(i = 0; i < 11 && d > days[i]; i++){ | |
35 | d = d - days[i]; | |
36 | } | |
37 | ||
38 | if(d < 0){ | |
39 | d = days [i] + d; | |
40 | } | |
41 | printf("\n\t\t%d/%d/%d", i+1,d, y); | |
42 | ||
43 | } | |
44 | ||
45 | int main() | |
46 | { | |
47 | int choice, past, mm, dd, yy, temp; | |
48 | char more; | |
49 | printf("\n\t\tThis program will find days past or date in the year"); | |
50 | ||
51 | do{ | |
52 | printf("\n\t\t1) date -> days past"); | |
53 | printf("\n\t\t2) days past -> date"); | |
54 | printf("\n\t\tYour choice (1/2)?"); | |
55 | scanf("%d", &choice); | |
56 | if(choice == 1){ | |
57 | printf("\n\t\tInput date (mm/dd/yyyy)"); | |
58 | scanf("%d/%d/%d", &mm, &dd, &yy); | |
59 | if(mm > 12) { | |
60 | printf("\n\t\tThere are not more than 13 months in a year"); | |
61 | } | |
62 | else if(dd > 31){ | |
63 | printf("\n\t\tCant have more than 31 days in a month"); | |
64 | } | |
65 | else if(mm == 2 && dd > 28 && leap(yy) != 1 || mm == 2 && dd > 29 && leap(yy) == 0){ | |
66 | printf("\n\t\tThere are not more than 28 day in February %d", yy); | |
67 | } | |
68 | else{ | |
69 | printf("\n\t\tThere are %d days past in the year", pastDays(mm, dd, yy)); | |
70 | } | |
71 | } | |
72 | else if(choice == 2) { | |
73 | printf("\n\t\tInput days past (ddd)"); | |
74 | scanf("%d", &past); | |
75 | printf("\n\t\tInput the year (yyyy)"); | |
76 | scanf("%d", &yy); | |
77 | if(past == 366 && leap(yy) == 0){ | |
78 | printf("\n\t\tError there's not 366 days in %d", yy); | |
79 | } | |
80 | else if(past > 365) { | |
81 | yy = yy + 1; | |
82 | past = past - 365; | |
83 | daysPast(past, yy); | |
84 | } | |
85 | else if(past < 0){ | |
86 | yy = yy -1; | |
87 | past = 365 + past; | |
88 | daysPast(past, yy); | |
89 | } | |
90 | else{ | |
91 | daysPast(past, yy); | |
92 | } | |
93 | } | |
94 | ||
95 | printf("\n\t\tDo more (Y/N)"); | |
96 | scanf("%s", &more); | |
97 | }while(more == 'y' || more == 'Y'); | |
98 | ||
99 | ||
100 | return 0; | |
101 | } |