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发表于 2021-1-7 22:52:57
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本帖最后由 Uijin_达达 于 2021-1-7 23:00 编辑
2.- #include <stdio.h>
- #include <math.h>
- double Pi, i, sum, limit, a = 1;
- int num = 1;
- int main()
- {
- while(1)
- {
- i = 1 / a;
- limit = pow(10, -8);
- if (i < limit)
- {
- break;
- }
- if (!(num % 2))
- {
- i = -i;
- }
- sum = sum + i;
- Pi = 4 * sum;
- a+=2;
- num++;
- }
- printf("Pi = %.7f\n", Pi);
- return 0;
- }
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3.
- #include <stdio.h>
- #include<math.h>
- int couple = 1, generation = 1, month = 24, born = 0, brith = 0, flag = 0;
- int main()
- {
- brith = month;
- do
- {
- if (month == (brith - 2))
- {
- flag = 1;
- }
- if (flag)
- {
- generation++;
- couple++;
- }
- month--;
- }
- while (month > 0);
- printf("%d\n", couple);
- return 0;
- }
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