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char buffer[100]; #include <stdio.h> #include <string.h> void main() { char *f = buffer; char *g = buffer; printf("%8.8x\n", f); f=(char*)memset(f,0x0a,12); printf("%8.8x\n", f); if (f == g) { int k = 12; while (k--) printf("%2.2x", *f++); } }