View Compilation Error

0_0_26233424_20246.cpp: In function 'int main()':
0_0_26233424_20246.cpp:6:8: error: expected primary-expression before 'if'
  while(if(scanf("%d %d",&a,&b)!=EOF))
        ^
0_0_26233424_20246.cpp:6:8: error: expected ')' before 'if'
0_0_26233424_20246.cpp:6:37: error: expected primary-expression before ')' token
  while(if(scanf("%d %d",&a,&b)!=EOF))
                                     ^