25 lines
343 B
C
25 lines
343 B
C
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#include <stdio.h>
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#include <stdlib.h> // atoi()
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int fib(n)
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{
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if (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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int main(int argc, char **argv)
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{
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int n;
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if (argc < 2) {
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printf("usage: fib n\n"
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"Compute nth Fibonacci number\n");
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return 1;
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}
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n = atoi(argv[1]);
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printf("fib(%d) = %d\n", n, fib(n));
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return 0;
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}
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