0_0_15003930_20267.cpp: In function 'int main()':
0_0_15003930_20267.cpp:5:29: error: 'eof' was not declared in this scope
while(scanf("%d%d",&a,&b)!=eof)
^
0_0_15003930_20267.cpp:6:18: error: 'prntf' was not declared in this scope
prntf("%d\n",a+b);
^
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