0_0_29339552_17125.cpp: In function 'int main()':
0_0_29339552_17125.cpp:3:26: error: 'scanf' was not declared in this scope
while(scanf("%d%d",&a,&b)){
^
0_0_29339552_17125.cpp:4:18: error: 'printf' was not declared in this scope
printf("%d",a+b);
^
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