0_0_7830570_20671.cpp: In function `bool isSeven(int)':
0_0_7830570_20671.cpp:4: error: `seven' undeclared (first use this function)
0_0_7830570_20671.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7830570_20671.cpp: At global scope:
0_0_7830570_20671.cpp:30: error: `char seven[10000000]' used prior to declaration
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