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| 1 | #include <stdio.h> | |
| 2 | #include <stdlib.h> | |
| 3 | ||
| 4 | int leap(int x){
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| 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){
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| 12 | - | int days[] = {31,28,31,30,31,30,31,30,31,30,31};
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| 12 | + | |
| 13 | int i, past = 0; | |
| 14 | ||
| 15 | if(leap(y)){
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| 16 | days[1] = 29; | |
| 17 | } | |
| 18 | ||
| 19 | for(i = 0; i < m-1; i++){
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| 20 | past = past + days[i]; | |
| 21 | } | |
| 22 | return past + d; | |
| 23 | } | |
| 24 | ||
| 25 | int daysPast(int d, int y) {
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| 26 | int days[] = {31,28,31,30,31,30,31,31,30,31,30,31};
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| 27 | ||
| 28 | int i, temp = 0; | |
| 29 | ||
| 30 | if(leap(y)){
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| 31 | days[1] = 29; | |
| 32 | } | |
| 33 | ||
| 34 | for(i = 0; i < 11 && d > days[i]; i++){
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| 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);
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| 42 | ||
| 43 | } | |
| 44 | ||
| 45 | int main() | |
| 46 | {
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| 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");
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| 50 | ||
| 51 | do{
| |
| 52 | printf("\n\t\t1) date -> days past");
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| 53 | printf("\n\t\t2) days past -> date");
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| 54 | printf("\n\t\tYour choice (1/2)?");
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| 55 | scanf("%d", &choice);
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| 56 | if(choice == 1){
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| 57 | printf("\n\t\tInput date (mm/dd/yyyy)");
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| 58 | scanf("%d/%d/%d", &mm, &dd, &yy);
| |
| 59 | if(mm > 12) {
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| 60 | printf("\n\t\tThere are not more than 13 months in a year");
| |
| 61 | } | |
| 62 | else if(dd > 31){
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| 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){
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| 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)");
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| 74 | scanf("%d", &past);
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| 75 | printf("\n\t\tInput the year (yyyy)");
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| 76 | scanf("%d", &yy);
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| 77 | if(past == 366 && leap(yy) == 0){
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| 78 | printf("\n\t\tError there's not 366 days in %d", yy);
| |
| 79 | } | |
| 80 | else if(past > 365) {
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| 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{
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| 91 | daysPast(past, yy); | |
| 92 | } | |
| 93 | } | |
| 94 | ||
| 95 | printf("\n\t\tDo more (Y/N)");
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| 96 | scanf("%s", &more);
| |
| 97 | }while(more == 'y' || more == 'Y'); | |
| 98 | ||
| 99 | ||
| 100 | return 0; | |
| 101 | } |