0_0_17751153_30472.cpp: In function 'int main()':
0_0_17751153_30472.cpp:47:29: error: 'str1' was not declared in this scope
printf("%s + %s = ",str1,str2);
^
0_0_17751153_30472.cpp:47:34: error: 'str2' was not declared in this scope
printf("%s + %s = ",str1,str2);
^
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