View Compilation Error

0_0_19877244_1925.cpp: In function 'int main()':
0_0_19877244_1925.cpp:5:32: error: 'eof' was not declared in this scope
     while(scanf("%d%d",&A,&B)!=eof) 
                                ^
0_0_19877244_1925.cpp:6:27: error: expected ';' before ':' token
         printf("%d\n",A+B):
                           ^