0_0_38275121_20797.cpp: In function 'int main()': 0_0_38275121_20797.cpp:4:2: error: '_int64' was not declared in this scope _int64 a[51]; ^ 0_0_38275121_20797.cpp:5:2: error: 'a' was not declared in this scope a[0] = 1; ^