23 lines
458 B
C
23 lines
458 B
C
#include<stdio.h>
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#include<sys/time.h>
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long calc(long n){
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if (n <= 1){
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return n;
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}else{
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return (calc(n - 1) + calc(n - 2));
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}
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}
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int main(){
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struct timeval tv1, tv2;
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gettimeofday(&tv1, NULL);
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for (int i=0;i<30;i++){
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calc(i);
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//printf("%ld\n",calc(i));
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//fflush(stdout);
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}
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gettimeofday(&tv2, NULL);
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printf("[%f]\n",(double)(tv2.tv_sec-tv1.tv_sec)+(double)(tv2.tv_usec-tv1.tv_usec)/1000000);
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return 0;
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}
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