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c語(yǔ)言 x的n次方用函數(shù)

C++

qq_我是超人_4 2017-11-16 11:37:44

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天將明96

TA貢獻(xiàn)15條經(jīng)驗(yàn) 獲得超13個(gè)贊

#include?<stdio.h>

//循環(huán)版
int?myPow1(int?x,?int?n)?{
????int?result?=?1;
????if?(n?==?0)?{
????????return?result;
????}
????for?(int?i?=?0;?i?<?n;?i++)?{
????????result?*=?x;
????}
????return?result;
}

//遞歸版
int?myPow2(int?x,?int?n)?{
????if?(n?==?0)
????????return?1;
????if?(n?==?1)
????????return?x;
????if?(n?>?1)
????????return?myPow2(x,?n?-?1)?*?x;
}

int?main()?{
????printf("%d\n",?myPow1(5,?4));
????printf("%d\n",?myPow2(5,?4));
}