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https://opencores.org/ocsvn/eco32/eco32/trunk
Subversion Repositories eco32
[/] [eco32/] [trunk/] [lcc/] [tst/] [switch.c] - Rev 251
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main() { int i; char *s; for (s = "bfnrtvx"; *s; s++) printf("%c = 0x%x\n", *s, backslash(*s)); f(); g(); h(); for (i = 0x1000000; i&0x7000000; i += 0x1000000) big(i); limit(); return 0; } backslash(c) { switch (c) { case 'b': return '\b'; case 'f': return '\f'; case 'n': return '\n'; case 'r': return '\r'; case 't': return '\t'; case 'v': return '\v'; } return c; } f() { int i, x = 0, y; printf("f:\n"); for (i = 0; i <= 20; i++) { y = i; switch (i) { case 1: x = i; break; case 2: x = i; break; case 7: x = i; break; case 8: x = i; break; case 9: x = i; break; case 16: x = i; break; case 17: x = i; break; case 18: x = i; break; case 19: x = i; break; case 20: x = i; break; } printf("x = %d\n", x); } } g() { int i; printf("g:\n"); for (i = 1; i <= 10; i++) switch (i) { case 1: case 2: printf("1 %d\n", i); break; case 3: case 4: case 5: printf("2 %d\n", i); break; case 6: case 7: case 8: printf("3 %d\n", i); default: printf("d %d\n", i); break; case 1001: case 1002: case 1003: case 1004: printf("5 %d\n", i); break; case 3001: case 3002: case 3003: case 3004: printf("6 %d\n", i); break; } } h() { int i, n=0; printf("h:\n"); for (i = 1; i <= 500; i++) switch (i) { default: n++; continue; case 128: printf("i = %d\n", i); break; case 16: printf("i = %d\n", i); break; case 8: printf("i = %d\n", i); break; case 120: printf("i = %d\n", i); break; case 280: printf("i = %d\n", i); break; case 264: printf("i = %d\n", i); break; case 248: printf("i = %d\n", i); break; case 272: printf("i = %d\n", i); break; case 304: printf("i = %d\n", i); break; case 296: printf("i = %d\n", i); break; case 288: printf("i = %d\n", i); break; case 312: printf("i = %d\n", i); break; } printf("%d defaults\n", n); } big(x) unsigned x; { switch(x&0x6000000){ case -1: case -2: case 0x0000000: printf("x = 0x%x\n", x); break; case 0x2000000: printf("x = 0x%x\n", x); break; case 0x4000000: printf("x = 0x%x\n", x); break; default: printf("x = 0x%x (default)\n", x); break; } } #include <limits.h> limit() { int i; for (i = INT_MIN; i <= INT_MIN+5; i++) switch (i) { case INT_MIN: printf("0\n"); break; case INT_MIN+1: printf("1\n"); break; case INT_MIN+2: printf("2\n"); break; case INT_MIN+3: printf("3\n"); break; case INT_MIN+4: printf("4\n"); break; default: printf("5\n"); break; } for (i = INT_MAX; i >= INT_MAX-5; i--) switch (i) { case INT_MAX: printf("0\n"); break; case INT_MAX-1: printf("1\n"); break; case INT_MAX-2: printf("2\n"); break; case INT_MAX-3: printf("3\n"); break; case INT_MAX-4: printf("4\n"); break; default: printf("5\n"); break; } }
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