56 lines
773 B
C
56 lines
773 B
C
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#include <stdio.h>
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void echange_1(int x, int y) {
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int tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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void echange_2(int *x, int *y) {
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int *tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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void echange_3(int *x, int *y) {
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int tmp;
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tmp = *x;
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*x = *y;
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*y = tmp;
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}
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void echange_4(int *x, int *y) {
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int *tmp;
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*tmp = *x;
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*x = *y;
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*y = *tmp;
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}
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// Expliquer de façon détaillée et justifiée ce qu'on obtient à l'exécution.
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int main(void) {
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int a = 1, b = 2;
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echange_1(a, b);
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printf("a = %d, b = %d\n", a, b);
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a = 1, b = 2;
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echange_2(&a, &b);
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printf("a = %d, b = %d\n", a, b);
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a = 1, b = 2;
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echange_3(&a, &b);
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printf("a = %d, b = %d\n", a, b);
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a = 1, b = 2;
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echange_4(&a, &b);
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printf("a = %d, b = %d\n", a, b);
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return 0;
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}
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