0_0_16836395_18129.c: In function 'main':
0_0_16836395_18129.c:8:8: error: 'i' undeclared (first use in this function)
while(i<=n)
^
0_0_16836395_18129.c:8:8: note: each undeclared identifier is reported only once for each function it appears in
0_0_16836395_18129.c:13:9: error: 'b' undeclared (first use in this function)
while(b<=m)
^
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