C语言里X的N次方
C\u8bed\u8a00\uff0c\u201c\u6b21\u65b9\u201d\u600e\u4e48\u7528\uff1f\u9700\u8981\u51c6\u5907\u7684\u6750\u6599\u5206\u522b\u6709\uff1a\u7535\u8111\u3001C\u8bed\u8a00\u7f16\u8bd1\u5668\u3002
1\u3001\u9996\u5148\uff0c\u6253\u5f00C\u8bed\u8a00\u7f16\u8bd1\u5668\uff0c\u65b0\u5efa\u4e00\u4e2a\u521d\u59cb.cpp\u6587\u4ef6\uff0c\u4f8b\u5982\uff1atest.cpp\u3002
2\u3001\u5728test.cpp\u6587\u4ef6\u4e2d\uff0c\u8f93\u5165C\u8bed\u8a00\u4ee3\u7801\uff1aprintf("%lf", pow(11, 3)); \u3002
3\u3001\u7f16\u8bd1\u5668\u8fd0\u884ctest.cpp\u6587\u4ef6\uff0c\u6b64\u65f6\u8ba1\u7b97\u51fa\u4e8611\u76843\u6b21\u65b9\u7684\u503c\u88ab\u6253\u5370\u3002
\u9700\u8981\u51c6\u5907\u7684\u6750\u6599\u5206\u522b\u6709\uff1a\u7535\u8111\u3001C\u8bed\u8a00\u7f16\u8bd1\u5668\u3002
1\u3001\u9996\u5148\uff0c\u6253\u5f00C\u8bed\u8a00\u7f16\u8bd1\u5668\uff0c\u65b0\u5efa\u4e00\u4e2a\u521d\u59cb.cpp\u6587\u4ef6\uff0c\u4f8b\u5982\uff1atest.cpp\u3002
2\u3001\u5728test.cpp\u6587\u4ef6\u4e2d\uff0c\u8f93\u5165C\u8bed\u8a00\u4ee3\u7801\uff1aint n = 5;printf("%lf", pow(10, n)); \u3002
3\u3001\u7f16\u8bd1\u5668\u8fd0\u884ctest.cpp\u6587\u4ef6\uff0c\u6b64\u65f6\u8ba1\u7b97\u51fa\u4e8610\u7684n\u6b21\u65b9\uff0c\u4f8b\u59825\u6b21\u65b9\u3002
double pow(double x,double y),计算以x为底的y次幂。包含在math.h这个头文件里。
在前面加上数学函数的头文件#include"math.h"
调用函数pow
定义double x,n;
然后将一个变量等于pow(x,n)，那个变量就是X的N次方
貌似几乎常见的所有程序乘方都是X^N，来表示X的N次方。
绛旓細{ if (n==0) return 1;else if (n%2==0)return power(x,x/2)*power(x,n/2);//鏈夋洿鏀 else return x*power(x,n-1);} int main(void){ double x;int n;printf("ENTER THE TWO NUMBER x,n: ");scanf("%lf%d",&x,&n);//鏈夋洿鏀癸紝%lf锛堝皬鍐欑殑L锛夛紝杈撳叆鏃朵笉鐢ㄦ爣鐐 prin...
绛旓細5float xdeN(float x, int k);void main(){ float a=7.01,b;int i;b=xdeN(a,N);printf("%f\n",b);}float xdeN(float x, int k){ int i;float sum=1;for(i=1;i<=k;i++)sum=sum*x;return sum;} 鎴戝啓鐨勭▼搴忔姣旇緝绠鍗曪紝鑳藉瀹炵幇绋嬪簭鐨勮姹傘 灏忔暟閮ㄥ垎杩樻槸鏈夎宸殑銆
绛旓細1銆佸钩鏂规牴 C璇█涓sqrt鍑芥暟鏄寚鐨勫紑鏂硅繍绠楀嚱鏁帮紝寰楀埌鐨勭粨鏋滄槸鍑芥暟鍙橀噺锛堝彲浠ユ槸鏁板硷紝涔熷彲浠ユ槸鍙橀噺鍚嶏級鐨勭畻鏈钩鏂规牴銆2銆丯娆℃柟鏍 double pow(double x,double n)鏄痬ath.h閲屼竴鍑芥暟锛屾眰x鐨刵娆″箓 x蹇呴』>0,绔嬫柟鏍瑰氨鏄1/3娆″箓浜 浣嗚繖閲岃鐢3.0鎴1.0/3锛屽惁鍒欐垚浜嗘暣闄ょ粨鏋滀负1 ...
绛旓細鏀瑰ソ浜嗭紝闄や簡鍙栧湴鍧绗︼紝杩樻湁鏍煎紡绗︿篃閿欎簡锛#include<stdio.h>double power(double x,int n);int main(){int n;double x;scanf("%lf %d",&x,&n);printf("%lf",power(x,n));return 0;}double power(double x,int n){int i;double p=1.0; for(i=1;i<=n;i++){p*=x;}...
绛旓細include "stdio.h"void main(){...//鍦╩ain鍑芥暟閲屽紩鐢ㄤ笅闈㈢殑鍑芥暟}//寰幆姹X鐨凬娆℃柟鐨勫嚱鏁癲ouble power(double x,int n){ double val=1.0;//锛堝垵濮嬪寲杩斿洖鍊硷級while(n--)//锛堝惊鐜疦娆★紝N娆℃柟锛塿al=val*x;//锛堟瘡娆′箻浠锛岀浉褰撲簬涔樹互1娆℃柟锛塺eturn(val);//锛堣繑鍥炵粨鏋滐級} ...
绛旓細{ if
绛旓細鎶妔canf("%d",&y);鏀规垚%f锛屽洜涓簓鏄诞鐐规暟锛岃%d鏄暣鍨嬪彉閲忥紝鍚岀悊 鎶妏rintf("x鐨刵娆℃柟鍊间负%d",x(y,n));涓殑%d鏀规垚%.2f 淇濈暀涓や綅灏忔暟锛屾垜杩愯浜 鍙互
绛旓細鎬濊矾锛氬畾涔変竴涓嚱鏁癴un(x,n)姹x鐨刵娆℃柟锛屽嵆杩涜n娆or寰幆鎵цx鐨勭疮鎴愶紝涓诲嚱鏁拌皟鐢╢un鍑芥暟銆傚弬鑰冧唬鐮侊細include <stdio.h>int fun(int x,int n){int s=1;while(n--){s*=x;}return s;} int main(){int x=2,y=10;printf("%d\n",fun(2,10));return 0;}/*杩愯缁撴灉锛氭眰2鐨10...
绛旓細娉ㄦ剰锛氫娇鐢╬ow鍑芥暟鏃讹紝闇瑕佸皢澶存枃浠#include<math.h>鍖呭惈杩涙簮鏂囦欢涓2銆佸湪C璇█涓锛10鐨刵娆℃柟鍙互琛ㄧず涓簆ow(10,n)銆傚叾涓璸ow鍑芥暟鍦ㄥご鏂囦欢math.h涓紝鎵浠ヨ皟鐢ㄨ鍑芥暟鐨勬椂鍊欙紝蹇呴』灏唌ath.h鍔犺繘鏉ワ紝鍗#include<math.h>銆傚師鍨嬶細extern float pow(float x,float y)鍔熻兘锛氳绠x鐨y娆″箓銆傝鏄庯細x搴斿ぇ浜...
绛旓細include <stdio.h> include <math.h> int main(){ double x;int n;scanf("%lf %d",&x,&n);printf("%.1lf\n",pow(x,n));return 0;}
