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#2
自由而无用2021-10-24 19:49
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#3
自由而无用2021-10-24 21:56
//online parser: https://www.bccn.net/run/
 程序代码：#include <stdio.h> int main(int argc, char *argv[]) { int isprime = 1; int i, x, cnt = 0; for (x = 2; cnt < 50; x++, cnt++, isprime = 1) { for (i = 2; i < x; i++) { if(x % i == 0) { isprime = 0; break; } } if (isprime == 1) printf("prime = %d\n", x); } return 0; } output sample: prime = 2 prime = 3 prime = 5 prime = 7 prime = 11 prime = 13 prime = 17 prime = 19 prime = 23 prime = 29 prime = 31 prime = 37 prime = 41 prime = 43 prime = 47 |
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#4
apull2021-10-25 08:59
问题出在isprime的初始化上了。
程序代码：#include <stdio.h> int main(int argc, char **argv) { int i; int x; int isprime=1; int cnt=0; for(x=2;cnt<50;x++){ isprime=1;//每次开始循环都要初始化一下 for(i=2;i<x;i++){ if(x%i==0){ isprime=0; break; } } if(isprime==1){ printf("%d\n",x);//换行分隔 cnt++; } } return 0; } |
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#5
我善治鬼2021-10-25 19:26
還有你打少了一個 } 號
附修正版 程序代码：#include <stdio.h> int main() { for (int 甲 = 2, 乙; 甲 < 100; 甲++) { for (乙 = 2; 乙 < 甲; 乙++) if (甲 % 乙 == 0) break; if (乙 == 甲) printf("%d 是素數\n", 甲); } return 0; } |