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View Compilation Error

0_0_39560605_29972.cpp: In function 'int main()':
0_0_39560605_29972.cpp:7:42: error: expected ';' before '}' token
    7 |         else printf("%d\n\n",((n+1)/2)*n)
      |                                          ^
      |                                          ;
    8 |     }
      |     ~                                     


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