用C语言如何编写1-1/2+1/3-1/4+…+(-1)（n+1次方）/n c语言用函数编写：1-1/2+1/3-1/4.....+((...
\u7528C\u8bed\u8a00\u5982\u4f55\u7f16\u51991-1/2+1/3-1/4+\u2026+(-1)(n+1\u6b21\u65b9)/n\u7ed9\u4f60\u4e2a\u7528\u9012\u5f52\u65b9\u6cd5\u7684\uff0c\u8fd9\u79cd\u9898\u76ee\u4e00\u822c\u662f\u7528\u9012\u5f52\u7b97\u6cd5\u505a\u7684
#include
#include
long double fun(int n);
main()
{
int n;
printf("\u8bf7\u8f93\u5165n\u7684\u503c\uff1a\n");
scanf("%d",&n);
printf("\u8868\u8fbe\u5f0f\u7684\u503c\u4e3a:%lf\n",fun(n));
}
long double fun(int n)
{
long double result;
if(n == 1)
{
return 1;
}
else
{
result = (long double)pow(-1,n+1)/n;
return result+fun(n-1);
}
}
#includedouble fun(int n){double s=0; for(;n;) if(n%2)s+=1.0/n--; else s-=1.0/n--; return s;}int main(){int n; scanf("%d",&n); printf("%g\n",fun(n)); return 0;}
绛旓細double sum=1,a=1,b;for(i=1;i<100;i++){ a=(-1)*a;b=a*i/(i+1);sum=sum+b;} printf("sum=%f\n",sum);}
绛旓細int v=1;while(1){ v=0-v;printf("v=%d\r\n",v);}
绛旓細鎬濊矾锛氶鍏堢湅鍒嗗瓙1锛-1锛1鈥︹︼紝姝ｈ礋浜ゆ浛鍙互姣忔鑷垚-1瀹炵幇锛屽垎姣1,2,3鈥︹︿緷娆￠掑锛岃冭檻鍒癱璇█涓暣鏁伴櫎浠ユ暣鏁扮粨鏋滄槸鏁存暟锛屽彲浠ユ妸鍒嗗瓙瀹氫箟鎴恌loat绫诲瀷銆傚弬鑰冧唬鐮侊細include <stdio.h>int main(){ int n,i; scanf("%d",&n); float sum=0.0,t=1.0; for(i=1;i<=n;i++...
绛旓細intmain(){ intfm=0;floatsum=0.0;for(fm=1;fm<=100;fm++){ if(fm%2!=0){ sum+=1.0/fm;} else { sum-=1.0/fm;} } printf("sum=%f\n",sum);return0;}
绛旓細1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爜锛氥俰nt n = 100;double s;for (int i = 1; i <= n; i++)if (i % 2 == 0)s -= 1.0 / i;else s += 1.0 / i;printf("%lf", s);3銆佺紪璇戝櫒杩愯test.cpp鏂囦欢锛...
绛旓細C 璇█浠ｇ爜濡備笅锛歚``c#include <stdio.h>int main(){ int i; float sum = 0.0;int flag = 1; // 鐢ㄤ簬鍒ゆ柇濂囧伓鏁伴」鐨勬璐熸 for (i = 1; i <= 100; i++) { sum += flag * 1.0 / i; flag = -flag; } printf("1-1/2+1/3-1/4+...-1/...
绛旓細<math.h> main(){ int n,i;float Result=0;printf("Please input the n: ");scanf("%d",&n);if(n<=0)printf("Please input a number no less than 1");else for(i=0;i<=n;i++)Result锛嬶紳pow(-1,n)/(2*n+1锛夛紱Printf("the Result is %6.3f",Result);getch();} ...
绛旓細鏂规硶姝ラ濡備笅锛1锛庨鍏堬紝瀹氫箟涓涓粨鏋勶紝鍖呮嫭鏁板笺佹帓鍚嶅拰搴忓彿銆2锛庡畾涔夌粨鏋勬暟缁勫彉閲廳锛屼繚瀛樻墍鏈夋暣鏁颁俊鎭3锛庢帴涓嬫潵锛屽畾涔変竴涓嚜瀹氫箟鍑芥暟鏉ユ瘮杈冩暣鏁板簭鍒椾腑浠绘剰涓や釜鏁存暟鐨勫ぇ灏忋4锛庡畾涔変竴涓嚜瀹氫箟鍑芥暟锛屾瘮杈冩暣鏁板簭鍒椾腑浠绘剰涓や釜鏁板瓧鐨勫簭鏁板ぇ灏忋5锛庡湪涓诲嚱鏁颁腑锛岄鍏堝畾涔変袱涓暣鏁帮紝骞朵繚瀛樻暣鏁颁釜鏁板拰鎺掑悕璁℃暟...
绛旓細main()鍑芥暟娌℃湁杩斿洖鍊 鍦╢un鍑芥暟涓仛闄ゆ硶杩愮畻鏃惰瀵规搷浣滄暟杩涜double绫诲瀷寮鸿浆锛屽惁鍒欐暣鏁伴棿闄ゆ硶浼氬嚭閿欍傚緱鍒扮殑鍊间笉鍑嗙‘銆
绛旓細include <stdio.h> int main(void){ int n;int i;int sign=1;double sum=0.0;printf("璇疯緭鍏鐨勫:\n");scanf("%d",&n);for(i=1;i<=2*n;i++){ sum=sum+sign*(1.0/i);sign=-sign;} printf("璁＄畻缁撴灉涓猴細");printf("%f\n",sum);return 0;} ...
