View Compilation Error

0_0_36774305_14997.cpp: In function 'int main()':
0_0_36774305_14997.cpp:4:16: error: 'a' was not declared in this scope
 scanf("%d %d",&a,&b);
                ^
0_0_36774305_14997.cpp:4:19: error: 'b' was not declared in this scope
 scanf("%d %d",&a,&b);
                   ^
0_0_36774305_14997.cpp:5:20: error: 'peintf' was not declared in this scope
 peintf("a+b=%d",a+b);
                    ^