88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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int main() {
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char* input = (char*) calloc(11, sizeof(char));
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char numbers[4] = "\0\0\0\0";
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char* ptr;
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int date[3] = {0, 0, 0};
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int counter1 = 0, counter2 = 0;
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int truth = 0;
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for (int j = 0; fgets(input, 11, stdin) != NULL; j++){
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if(input[0] == '\n') continue;
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for(int i = 0; i < 11; i++){
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if(!isdigit(input[i]) && input[i] != '.' && input[i] != '\0' && input[i] != '\n'){
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puts("Neplatny datum.");
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goto LABEL;
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}
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if(input[i] != '.' && input[i] != '\n' && input[i] != '\0'){
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numbers[counter1++] = input[i];
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}
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else {
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date[counter2++] = (int) strtol(numbers, &ptr, 10);
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if(counter2 == 1 && (date[0] < 1 || date[0] > 31)){
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puts("Neplatny datum.");
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goto LABEL;
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}
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else if(counter2 == 2 && (date[1] < 1 || date[1] > 12)){
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puts("Neplatny datum.");
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goto LABEL;
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}
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/*else if(counter2 == 2 && date[0] > 29){
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//goto LABEL;
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}*/
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else if (counter2 == 3){
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if(date[2] < 1900 || date[2] > 2100){
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puts("Neplatny datum.");
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goto LABEL;
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}
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if(date[0] >= 29 && date[1] == 2 && date[2] % 4 != 0 && (date[2] % 100 == 0 || (date[2] % 100 == 0 && date[2] % 400 != 0))){
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puts("Neplatny datum");
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goto LABEL;
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}
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date[0] += 7;
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if(date[0] > 31 && (date[1] == 1 || date[1] == 3 || date[1] == 5 || date[1] == 7 || date[1] == 8 || date[1] == 10 || date[1] == 12)){
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date[0] -= 31;
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date[1]++;
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if(date[1] > 12){
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date[1] = 1;
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date[2]++;
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}
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}
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if(date[0] > 30 && (date[1] == 4 || date[1] == 6 || date[1] == 9 || date[1] == 11)){
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date[0] -= 30;
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date[1]++;
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}
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if(date[0] > 29 && date[1] == 2 && date[2] % 4 == 0 && (date[2] % 100 != 0 || (date[2] %100 == 0 && date[2] % 400 == 0))){
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date[0] -= 29;
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date[1]++;
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}
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else if(date[0] > 28 && date[1] == 2){
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date[0] -= 28;
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date[1]++;
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}
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printf("%d.%d.%d\n\n", date[0], date[1], date[2]);
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break;
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}
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memset(numbers, '\0', 4);
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counter1 = 0;
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}
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}
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if(isdigit(input[9])) getchar();
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LABEL:
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memset(input, '\0', 11);
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date[0] = 0, date[1] = 0, date[2] = 0;
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counter1 = 0, counter2 = 0;
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memset(numbers, '\0', 4);
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}
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free(input);
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return 0;
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} |