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  1.  
  2. 	// your code goes here
  3.     #include <stdio.h>
  4. int main(void)
  5. {int sum=0,i,n;
  6. printf("请输入一个正整数：\n");
  7. scanf("%d",&n);
  8. for(i=1;i<=n;i+=2)  sum=sum+i;
  9. printf("sum=%d\n",sum);
  10. return 0;
  11. }
  12.  
Success #stdin #stdout 0s 5280KB
comments (?)
stdin 
7
stdout 
请输入一个正整数：
sum=16
https://ideone.com/RE9b0I
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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