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main(){ int k,flag=1,n;float s=0；scanf("%d",&n);for(k=1;k&=n;k++);...在C语言中，int整形里，“/”号是除以后去整的意思，这里如果不修改flag的形式，得出来的1/2 2/3取整后都是0，结果永远是0。 一句话来说就是，这个题目错了
C语言，编写一程序输入一个正整数n，计算并输出s的前n项和，s=1/2-2/3+3/4-4/5+......(-1)n/(n+1)
这里如果不修改flag的形式在C语言中。
一句话来说就是;2 2&#47，结果永远是0;”号是除以后去整的意思;3取整后都是0，得出来的1&#47，“&#47，int整形里C语言，编写一程序输入一个正整数n，计算并输出s的前n项和，s=1/2-2/3+3/4-4/5+......(-1)n/(n+1)在C语言中，int整形里，“/”号是除以后去整的意思，这里如果不修改flag的形式，得出来的1&
=n;float s=0，把这程序补充完整;sum=%f\} 在横线上填写;__________;；scanf(&for(k=1;k++),n;;k&lt,&n);s=s+________,flag=1;n&quot,s);%d&}printf(&quotmain(){ int k
main(){ int k,flag=1,n;float s=0；scanf("%d",&n);for(k=1;k&=n;k++);...在C语言中，int整形里，“/”号是除以后去整的意思，这里如果不修改flag的形式，得出来的1/2 2/3取整后都是0，结果永远是0。 一句话来说就是，这个题目错了急需啊#include int main(void) { float s=0.0; printf("请输入需要计算数列前多少项："); while(!scanf("%d",&n)){ printf("输入错误！请重新输入："); fflush(stdin); } for(int i=0;in* (n+1) 求补全 #include&stdio.h& main（） {int n=10； printf（“s=%...#include int main() { double sum=0; scanf("%d", &n); for(i=1;i思路：先定义一个函数fun（n）用来计算1到n的和，接着for循环计算1到n的fun（n）和就是s的值。 参考代码： #include int fun(int n){int sum=0,i;for(i=1;iint n,i; float total=0; scanf("%d\n",&n); for(i=1;iint main(int argc, char* argv[]) { float f1 = 0; float res = 0; printf("input n:\n",&n); scanf("%d",&n); for(i=1;i/* 1-2/3+3/5-4/7+5/9-6/11+.......的前n项之和*/ int main(int argc, char *argv[]) { int num_n = 1; int i = 0; double result = 0.0; printf("please input a Integer:"); //scanf("%d", &num_n); num_n = 3; for(i=0; i#include int main() {int n=2,i; float sum=0; for(i=1;i#include main( ) { int denominator , flag，i, double item, printf(“Enter n:”); scanf(“%d”,&n); denominator = 1; flag=1; sum = 0 for(i = 1; i#include int main() { double s=0; int n,t=0; printf("请输入n\n"); scanf("%d",&n); for(i=1;i
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渝ICP备号-23(4,6(1H,5H)-Pyrimidinedione,1,3-diethyldihydro-2-thioxo- )
Molecular Formula: C8H12 N2 O2 SMolecular Weight: 200.26
Identification of
Molecular Formula:
C8H12 N2 O2 S
CAS Registry Number:
Barbituricacid, 1,3-diethyl-2-thio- (6CI,7CI,8CI);
1,3-Diethyl-2- 1,3-Diethy
N,N'-Diethyl-2- N,N'-Diethy
NSC 158284
InChI=1/C23H19N5O3/c1-16-15-22(27(26-16)18-7-3-2-4-8-18)24-20-9-5-6-10-21(20)25-23(29)17-11-13-19(14-12-17)28(30)31/h2-15,24H,1H3,(H,25,29)
Molecular Structure:
This structure is also available as a
Chemical Properties
Appearance:
off-white powder
Molecular Weight:
Boiling Point:
273.4°Cat760mmHg
Melting Point:
109-112 °C(lit.)
Flash Point:
119.2°C
Storage Temperature:
Refractive index:
Safety Data of
Safety Statements:
Related Products Information
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4,6(1H,5H)-Pyrimidinedione, 1,3-diethyldihydro-5-p()
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4,6(1H,5H)-Pyrimidinedione, 1,3-diethyldihydro-5-m()
4,6(1H,5H)-Pyrimidinedione,5,5-diethyldihydro-2-th()
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Hoover Commercial小提琴 尺寸4/4 3/4 2/4 1/4 指的是什么地方...
... ...小提琴最大是四分之四大小的... ...嗯
这个是标准尺寸所谓四分之三四分之二是在标准尺寸下的
小号的是给小孩子拉的呢
把小提琴夹在左边肩膀上然后伸展左臂看琴头的位置是否恰好落在手掌心上
这就是选择提琴大小的依据... ...买大了买小了都不好因为把位板是按照比例递缩的，万一买的大小不对就容易按错音 音准就不对了
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