c语言中-1的n次方怎么表示？ C语言中指数怎么表示例如（-1）的n次方怎么表示
C\u8bed\u8a00\u4e2d\u8d1f\u4e00\u7684n\u6b21\u65b9\u600e\u4e48\u8868\u793a\uff1f\u53ef\u4ee5\u7528\u5e93\u51fd\u6570pow\u6765\u8868\u793a\u3002\u5373pow(-1, n);
\u51fd\u6570\u539f\u578b\uff1adouble pow(double x, double y);
\u529f \u80fd\uff1a\u8ba1\u7b97x^y
\u8fd4 \u56de \u503c\uff1a\u8ba1\u7b97\u7ed3\u679c
\u4e3e\u4f8b\uff1a
double x=-1, n=4, y;y = pow(x, n); // \u8ba1\u7b97x^n\u5373(-1)^n\u6ce8\uff1a\u4f7f\u7528pow\u51fd\u6570\u7684\u65f6\u5019\uff0c\u9700\u8981\u5c06\u5934\u6587\u4ef6#include\u5305\u542b\u8fdb\u6e90\u6587\u4ef6\u4e2d\u3002
C\u8bed\u8a00\u4e2d\u8ba1\u7b97\u4e00\u4e2a\u6570\u7684N\u6b21\u65b9\u53ef\u4ee5\u7528\u5e93\u51fd\u6570pow\u6765\u5b9e\u73b0\u3002
\u51fd\u6570\u539f\u578b\uff1adouble pow(double x, double y)\u3002
\u4e3e\u4f8b\u5982\u4e0b\uff1a
double a = pow(3.14, 2); // \u8ba1\u7b973.14\u7684\u5e73\u65b9\u3002
\u6ce8\uff1a\u4f7f\u7528pow\u51fd\u6570\u65f6\uff0c\u9700\u8981\u5c06\u5934\u6587\u4ef6#include\u5305\u542b\u8fdb\u6e90\u6587\u4ef6\u4e2d\u3002
\u6269\u5c55\u8d44\u6599\uff1a
POWER\u51fd\u6570\u7684\u8bed\u6cd5\u4e3a\uff1aPOWER(number,power)\uff0c\u5176\u4e2d\u53c2\u6570number\u8868\u793a\u5e95\u6570\uff1b\u53c2\u6570power\u8868\u793a\u6307\u6570\u3002\u4e24\u4e2a\u53c2\u6570\u53ef\u4ee5\u662f\u4efb\u610f\u5b9e\u6570\uff0c\u5f53\u53c2\u6570power\u7684\u503c\u4e3a\u5c0f\u6570\u65f6\uff0c\u8868\u793a\u8ba1\u7b97\u7684\u662f\u5f00\u65b9\u3002
\u5f53\u53c2\u6570number\u53d6\u503c\u5c0f\u4e8e0\u4e14\u53c2\u6570power\u4e3a\u5c0f\u6570\u65f6\uff0cPOWER\u51fd\u6570\u5c06\u8fd4\u56de#NUM!\u9519\u8bef\u503c\uff0c\u4e3b\u8981\u4f5c\u7528\u662f\u8fd4\u56de\u7ed9\u5b9a\u6570\u5b57\u7684\u4e58\u5e42\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-power \uff08\u51fd\u6570\uff09
pow(-1,n);
记得要包含头文件math.h
,pow(x,1.0/n) 表达式的n次方? expression = ***; temp = 1; for(int i=0; i temp *= expression;
绛旓細pow(-1,n);璁板緱瑕佸寘鍚ご鏂囦欢math.h
绛旓細鍙互鐢ㄥ簱鍑芥暟pow鏉琛ㄧず銆傚嵆pow(-1, n);鍑芥暟鍘熷瀷锛歞ouble pow(double x, double y);鍔 鑳斤細璁＄畻x^y 杩 鍥 鍊硷細璁＄畻缁撴灉 涓句緥锛歞ouble x=-1, n=4, y;y = pow(x, n); // 璁＄畻x^n鍗(-1)^n娉細浣跨敤pow鍑芥暟鐨勬椂鍊欙紝闇瑕佸皢澶存枃浠#include<math.h>鍖呭惈杩涙簮鏂囦欢涓
绛旓細C璇█涓绠椾竴涓暟鐨凬娆℃柟鍙互鐢ㄥ簱鍑芥暟pow鏉ュ疄鐜銆傚嚱鏁板師鍨嬶細double pow(double x, double y)銆備妇渚嬪涓嬶細double a = pow(3.14, 2); // 璁＄畻3.14鐨勫钩鏂广傛敞锛氫娇鐢╬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
绛旓細C璇█涓闄や簡浣跨敤鍑芥暟pow瀹炵幇涔樻柟杩愮畻锛屾病鏈夊叾浠栫殑杩愮畻绗﹀彿鍙互鐢ㄦ潵鐩存帴琛ㄧず涔樻柟锛屽氨绠楄嚜宸卞疄鐜颁篃鍙兘鏄互鍑芥暟鐨勫舰寮忎綋鐜板嚭鏉ャ1銆丆璇█涓绠椾竴涓暟鐨凬娆℃柟鍙互鐢ㄥ簱鍑芥暟pow鏉ュ疄鐜帮紝杩樺彲浠ョ洿鎺ヤ娇鐢2^3灏卞彲浠ョ畻鍑虹粨鏋溿俻ow鍑芥暟鍘熷瀷锛歞ouble pow(double x,double y)銆傚叾涓瓁鍊兼槸搴曟暟锛寉鍊兼槸骞傘備妇渚嬶細double...
绛旓細C璇█涓绠椾竴涓暟鐨凬娆℃柟鍙互鐢ㄥ簱鍑芥暟pow鏉ュ疄鐜銆傚嚱鏁板師鍨嬶細double pow(double x, double y)銆備唬鐮佸涓嬶細include <stdio.h> include <math.h> int main( ){ printf("%f",pow锛坸锛寉)锛夛紱return 0锛泒 娉細浣跨敤pow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傘...
绛旓細C璇█涓璁＄畻涓涓暟鐨凬娆℃柟鍙互鐢ㄥ簱鍑芥暟pow鏉ュ疄鐜般傚嚱鏁板師鍨嬶細double pow(double x, double y)銆備妇渚嬪涓嬶細double a = pow(3.14, 2); // 璁＄畻3.14鐨勫钩鏂广傛敞锛氫娇鐢╬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
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;}
绛旓細浜叉祴鍙敤 long jiecheng(int x){ long int i,k=1;for(i=1;i<=x;i++)k=k*i;return k;} int main(){ long int j,k=0;int i;for(i=1;i<=20;i++){ j=jiecheng(i);k+=j;} printf("%ld\n",k);} 杈撳嚭鐨勭粨鏋滄槸2561327494111820313 ...
绛旓細C璇█涓鏈変袱绉嶆柟寮忓彲浠琛ㄧず鎸囨暟锛1銆佺洿鎺ョ敤娴偣鏁拌〃绀猴細10鐨凬娆℃柟涓 1e10 涔熷彲鍐欐垚1e+10(濡傛灉鏄礋N娆℃柟鐨勮瘽灏辨妸鍔犲彿鍙樻垚鍑忓彿锛夈俥澶у皬鍐欓兘鍙互锛岄渶瑕佹敞鎰忕殑鏄痚鍓嶉潰蹇呴』鏈変竴涓暟瀛楋紝涓嶇劧鐨勮瘽灏遍潪娉琛ㄨ揪銆2銆佺敤骞傚嚱鏁拌〃绀猴細鍦c璇█涓锛屾眰x鐨剏娆℃柟鍙敤pow(x,y)琛ㄧず锛屾墍浠10鐨凬娆℃柟涔熷彲琛ㄧず涓...
绛旓細闇瑕佸噯澶囩殑鏉愭枡鍒嗗埆鏈夛細鐢佃剳銆C璇█缂栬瘧鍣ㄣ1銆侀鍏堬紝鎵撳紑C璇█缂栬瘧鍣紝鏂板缓涓涓垵濮.cpp鏂囦欢锛屼緥濡傦細test.cpp銆2銆佸湪test.cpp鏂囦欢涓紝杈撳叆C璇█浠ｇ爜锛歱rintf("%lf", pow(11, 3)); 銆3銆佺紪璇戝櫒杩愯test.cpp鏂囦欢锛屾鏃惰绠楀嚭浜11鐨3娆℃柟鐨鍊艰鎵撳嵃銆
