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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int fib(int n) {
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if (n == 1 || n == 2) {
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return 1;
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} else {
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return fib(n - 1) + fib(n - 2);
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}
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}
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int main(int argc, char **argv) {
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long long n = atoi(argv[1]);
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printf("斐波那契数列的第%d项是：%d\n", n, fib(n));
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return 0;
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}
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