中国石油大学第六章计算机作业（China University of Petroleum sixth chapter computer operation）.doc
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中国石油大学第六章计算机作业（China University of Petroleum sixth chapter computer operation）
[research innovation] 6.1 who can qualify?
TV station super student talent competition, because the number of entries is too much, so we should first group preliminaries. According to regulations, every 10 students for a qualifying group, judges play score (0~100 score), the first group to enter the next round; if there are students in the same score are the first, you can also enter the next round.
Input:
The final score of a team of 10 is given sequentially (int).
Output:
The serial number (0~9) of students who can qualify.
#include stdio.h
Void, main ()
{
Int, s[10], a, i;
A=0;
For (i=0; i=9; i++)
{scanf (%d, s[i]);
If (s[i]a) a=s[i];
}
For (i=0; i=9; i++)
If (a==s[i]) printf (%d\n, I);
}
6.2 the number of statistical primes
Find 2 to m (including m, m=1000) all prime numbers, and put them in the array a.
Input: positive integer m
Output: all primes and numbers from small to large (when the prime output is controlled by%4d)
Such as:
Input: 10
Output: 2357
Four
#include stdio.h
Void, main ()
{
Int, a, I, B, c;
C=0;
Scanf (%d, a);
For (i=2; ia; i++)
{
For (b=2; bi; b++)
If (i%b==0) break;
If (b==i)
{
Printf (%4d, I);
C++;
}
}
Printf (\n);
Printf (%d\n, C);
}
6.3 bubble sort
The basic concept of bubble sort (BubbleSort) is to compare two adjacent numbers in turn, put the decimal in front, and put the big number behind. That is, in the first row: first compare the first and the second numbers, and then put the decimal before the big one. Then compare the second numbers and the third numbers, put the decimal before the big numbers, so continue until you compare the last two numbers, put the decimal before the big number. At the end of the first trip, the maximum number is put to the end. In second times: from the beginning of the first logarithmic comparison (because may be due to exchange, number second and number third the number first is no longer less than second, the decimal number) be
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