* Structure-05. rational number mean, structure-05 rational number mean

* Structure-05. rational number mean, structure-05 rational number mean

1/* 2 * Main. c 3 * F5-structure-05. rational Number Average 4 * Created on: August 26, 2014 5 * Author: in the Boomkeeper 6 ********** part, the ** floating point error ******* 7 */8 9 # include <stdio. h> 10/** 11 * rational number struct 12 */13 struct rational {14 int numerator; 15 int denominator; 16 }; 17/** 18 * maximum common approx. 19 */20 int greatCommonDivisor (int m, int n) {21 int I; 22 for (I = (m <n? M: n); I> 1; I --) {23 if (m % I = 0 & n % I = 0) 24 break; 25} 26 return I; 27} 28 29 int main (void) {30 31 int n; // N32 struct rational num [101]; 33 struct rational result; 34 int I; 35 36 scanf ("% d", & n); 37 getchar (); 38 39 for (I = 0; I <n; I ++) {40 scanf ("% d/% d", & num [I]. numerator, & num [I]. denominator); 41} 42 43 result. numerator = num [0]. numerator; 44 result. denominator = num [0]. denominator; 45 46 // sum of points 47 for (I = 1; I <n; I ++) {48 result. numerator = result. numerator * num [I]. denominator49 + num [I]. numerator * result. denominator; 50 result. denominator = result. denominator * num [I]. denominator; 51 if (result. numerator! = 0) {52 // avoid accumulating and exceeding the int range. After each accumulation, divide about 53 int gcd = greatCommonDivisor (result. numerator, result. denominator); 54 result. numerator/= gcd; 55 result. denominator/= gcd; 56} 57 58} 59 60 // calculate the average 61 result. denominator * = n; 62 int gcd = greatCommonDivisor (result. numerator, result. denominator); 63 result. numerator/= gcd; 64 result. denominator/= gcd; 65 66 // output result 67 if (result. denominator = 1) 68 printf ("% d \ n", result. numerator); 69 else70 printf ("% d/% d \ n", result. numerator, result. denominator); 71 72 return 0; 73}

 

Question link:

Http://pat.zju.edu.cn/contests/basic-programming/%E7%BB%93%E6%9E%84-05

 

First, input the scores of N students in the M course on the keyboard, and then calculate and output the total scores and average values of each student.

It's not hard.
# Include <stdio. h>
# Define N 3
# Define M 3
Main ()
{
Int a [N] [M], sum [N] = {0 };
Double avg [N];
Int I, j;
For (I = 0; I <N; I ++)
{
Printf ("Input the % dth student's scores:", I + 1 );
For (j = 0; j <M; j ++)
{
Scanf ("% d", & a [I] [j]);
Sum [I] + = a [I] [j];
}
Avg [I] = (double) sum [I]/M;
}
Printf ("The sums are :");
For (I = 0; I <N; I ++)
Printf ("% 4d", sum [I]);
Printf ("\ nThe averages are :");
For (I = 0; I <N; I ++)
Printf ("% 6.2lf", avg [I]);
Printf ("\ n ");
}
// OK I wish it will be help.

What is the difference between 7 days and 4 months of pregnancy?

I don't think you need to be nervous. I used to have such a situation during B-ultrasound! At that time, I was very anxious to ask the doctor. In fact, it was because the location of the child was constantly changing. The B-ultrasound doctor was not very clear! For example, if the child is lying down, the doctor will write a facial presentation that is not satisfied! Haha! You can rest assured!