32 lines
578 B
C
32 lines
578 B
C
#include <stdio.h>
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#include <stdlib.h>
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int main(void) {
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int n;
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int i;
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int est_premier;
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printf("Entrez un entier naturel : ");
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scanf("%d", &n);
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if (n < 2) {
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est_premier = 0;
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} else {
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est_premier = 1;
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for (i = 2; i * i <= n; i++) {
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if (n % i == 0) {
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est_premier = 0;
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i = n;
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}
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}
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}
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if (est_premier) {
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printf("%d est un nombre premier.\n", n);
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} else {
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printf("%d n'est pas un nombre premier.\n", n);
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}
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return EXIT_SUCCESS;
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}
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