(2/7+40%)*7/6-1/5

来源：蜘蛛抓取(WebSpider) 时间：2011-08-21 05:59 标签： 古井5年原浆价格40.6
麻烦帮我看看这个c语言程序有什么问题。原题：1-1/2+1/3-1/4-1/5-1/6+1/7-....前40项的和。_百度知道
麻烦帮我看看这个c语言程序有什么问题。原题：1-1/2+1/3-1/4-1/5-1/6+1/7-....前40项的和。
#include &stdio.h&#include &math.h&#define N 40void main(){float x,sum=0;int i,n=1;for(i=1;i&=N;i++){x=(-1)/i;if(i==pow(2,n)-1) {x=-x;n++;}sum=sum+x;}printf(&sum=%f\n&,sum);}
提问者采纳
(-1)/i 整形 值1或者0
X值能1或0块要改(-1.0)/i
或者加强制类型转换
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出门在外也不愁1/8÷12.5%×(2/3+3/4) (6.7×60％+3.3×60％)÷1/4 6.25％×19/18-1/18×5/8 25×（1+40％）用简便方法算谢了,急求,急啊!一定要过程!急1/8÷12.5%×(2/3+3/4)
(6.7×60％+3.3×60％)÷1/4
6.25％×_百度作业帮
1/8÷12.5%×(2/3+3/4) (6.7×60％+3.3×60％)÷1/4 6.25％×19/18-1/18×5/8 25×（1+40％）用简便方法算谢了,急求,急啊!一定要过程!急1/8÷12.5%×(2/3+3/4)
(6.7×60％+3.3×60％)÷1/4
6.25％×19/18-1/18×5/8
25×（1+40％）这样清楚点,悬赏什么的加是可以的啊
鴽耜鬻0002E
1/8÷12.5%×(2/3+3/4) (6.7×60％+3.3×60％)÷1/4 =(1/8×)×(2/3+3/4) =(60%×(6.7+3.3))÷1/4 =(1/8×8)×(8/12+9/12) =(60%×10)÷1/4 =1×17/12 =6÷1/4 =17/12 =6×4=1又5/12 =246.25％×19/18-1/18×5/8 25×（1+40％）=625/1-1/18×5/8 =25+25×40%=5/8×19/18-1/18×5/8 =25+10=5/8×(19/18-1/18) =35=5/8×1=5/8
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扫描下载二维码(1+40%)x=7 1-25%x=3/5 40%x+x/8=42 求解 要正确答案!_百度作业帮
(1+40%)x=7 1-25%x=3/5 40%x+x/8=42 求解 要正确答案!
(1+40%)x=71.4x=7x=7÷1.4x=51-25%x=3/50.25x=1-0.60.25x=0.4x=0.4÷0.25x=1.640%x+x/8=422/5x+1/8x=4221/40x=42x=42÷21/40x=80如果本题有什么不明白可以追问,另外发并点击我的头像向我求助,请谅解,
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扫描下载二维码1/C28H41N5O15S.Na/c1-12(2)21(28(42)43)33-26(41)17(9-15-5-7-16(8-6-15)48-49(44,45)46)31-25(40)18(29-13(3)35)10-20(37)32-27-22(30-14(4)36)24(39)23(38)19(11-34)47-27;/h5-8,12,17-19,21-24,27,34,38-39H,9-11H2,1-4H3,(H,29,35)(H,30,36)(H,31,40)(H,32,37)(H,33,41
1/C33H42O7/c1-19-25-17-24-18-27(39-22(4)35)20(2)29(32(24,5)6)30(37)31(33(25,7)16-15-26(19)38-21(3)34)40-28(36)14-13-23-11-9-8-10-12-23/h8-14,24-27,30-31,37H,1,15-18H2,2-7H3/b14-13+/t24-,25-,26+,27+,30-,31+,33-/m1/s
1/C27H27N3O3S/c1-30-25(20-11-15-23(33-3)16-12-20)24(19-9-13-22(32-2)14-10-19)29-27(30)34-18-17-28-26(31)21-7-5-4-6-8-21/h4-16H,17-18H2,1-3H3,(H,28,31
11',29'-di-tert-butyl-5',17',23',35',38',40',43',45'-octamethyl-7',15',25',33'-tetraoxadispiro[cyclohexane-1,2'-heptacyclo[32.2.2.2~3,6~.2~16,19~.2~21,24~.1~9,13~.1~27,31~]hexatetracontane-20',1''-cyclohexane]-1'(36'),3',5',9'(44'),10',12',16',18',21',23'
1/C26H18O2/c1-17-16-23-21-9-5-3-7-19(21)11-13-25(23)28-26(17)15-14-22-20-8-4-2-6-18(20)10-12-24(22)27-26/h2-16H,1H
1/C22H28O6/c1-23-17-11-21(27-5)19(25-3)9-15(17)13-7-8-14(13)16-10-20(26-4)22(28-6)12-18(16)24-2/h9-14H,7-8H2,1-6H3/t13-,14
Somatoliberin (humanpancreatic islet),1-[5-(iodo-125I)-L-histidine]-2-D-alanine-27-L-norleucine-29-L-argininamide-30-de-L-glutamine-31-de-L-glutamine-32-deglycine-33-de-L-glutamicacid-34-de-L-serine-35-de-L-asparagine-36-de-L-glutamine-37-de-L-glutamicacid-38-de-L-arginine-39-deglycine-40-de-L-alanine-41-de-L-arginine-42-de-L-alanine-43-de-L-arginine-44-de-L-leucinamide-(9CI)
1/C21H26N2O4/c1-3-14-8-9-19(25)23(12-14)11-10-16-15-6-4-5-7-18(15)22-20(16)17(13-24)21(26)27-2/h4-7,12,17,22,24H,3,8-11,13H2,1-2H
1/C30H52/c1-10-25(6)16-12-20-30(9,21-13-17-26(7)15-11-14-23(2)3)29-22-27(8)18-19-28(29)24(4)5/h10,17,22-23,25,28-29H,1,4,11-16,18-21H2,2-3,5-9H3/b26-17
Somatoliberin (humanpancreatic islet),1-D-tyrosine-2-D-alanine-27-L-norleucine-29-L-argininamide-30-de-L-glutamine-31-de-L-glutamine-32-deglycine-33-de-L-glutamicacid-34-de-L-serine-35-de-L-asparagine-36-de-L-glutamine-37-de-L-glutamicacid-38-de-L-arginine-39-deglycine-40-de-L-alanine-41-de-L-arginine-42-de-L-alanine-43-de-L-arginine-44-de-L-leucinamide-(9CI)
1/C51H74N2/c1-5-9-13-17-21-49(22-18-14-10-6-2)42-53(43-50(23-19-15-11-7-3)24-20-16-12-8-4)51-39-37-47(38-40-51)32-31-45-27-25-44(26-28-45)29-30-46-33-35-48(41-52)36-34-46/h25-40,49-50H,5-24,42-43H2,1-4H3/b30-29+,32-31
1/C51H74N2/c1-5-9-13-17-21-49(22-18-14-10-6-2)42-53(43-50(23-19-15-11-7-3)24-20-16-12-8-4)51-39-37-47(38-40-51)32-31-45-27-25-44(26-28-45)29-30-46-33-35-48(41-52)36-34-46/h25-40,49-50H,5-24,42-43H2,1-4H3/b30-29+,32-314x:0.4=0.5:3/5 1/2:1/3=1/4:x 40%:x=(1+1/7):5/6 75%:(x+1)=1/4_百度作业帮
4x:0.4=0.5:3/5 1/2:1/3=1/4:x 40%:x=(1+1/7):5/6 75%:(x+1)=1/4
4x:0.4=0.5:3/5 4x*3/5 =0.5*0.412/5*x=0.2x=1/5*5/12x=1/121/2:1/3=1/4:x 1/2*x=1/3*1/4:1/2*x=1/12x=1/12*2x=1/640%:x=(1+1/7):5/6 8/7*x=40%*5/6 8/7*x=2/5*5/6 8/7*x=1/3x=1/3*7/8x=7/2475%:(x+1)=1/4x+1=75%*4x+1=3x=3-1x=2
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