32 lines
537 B
C
32 lines
537 B
C
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#define __USE_XOPEN
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#define _GNU_SOURCE
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#include<stdio.h>
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#include<time.h>
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#include<stdlib.h>
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int main() {
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char buffer[20];
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struct tm tm;
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char *retval = fgets(buffer, sizeof(buffer), stdin);
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if (retval == 0) {
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puts("Neplatny datum");
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return 0;
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}
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retval = strptime(buffer, "%e.%m.%-Y", &tm);
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if (retval == 0) {
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puts("Neplatny datum");
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return 0;
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}
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tm.tm_mday += 7;
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strftime(buffer, sizeof(buffer), "%e.%m.%-Y", &tm);
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puts(buffer);
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return 0;
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}
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