0_0_18627064_21182.c: In function 'main':
0_0_18627064_21182.c:8:13: error: 'PI' undeclared (first use in this function)
j=(4.0/3.0)*PI*i*i*i;
^
0_0_18627064_21182.c:8:13: note: each undeclared identifier is reported only once for each function it appears in
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