ORCA-C/Tests/Conformance/C7.5.9.1.CC
Stephen Heumann 91d33b586d Fix various C99+ conformance issues and bugs in test cases.
The main changes made to most tests are:

*Declarations always include explicit types, not relying on implicit int. The declaration of main in most test programs is changed to be "int main (void) {...}", adding an explicit return type and a prototype. (There are still some non-prototyped functions, though.)

*Functions are always declared before use, either by including a header or by providing a declaration for the specific function. The latter approach is usually used for printf, to avoid requiring ORCA/C to process stdio.h when compiling every test case (which might make test runs noticeably slower).

*Make all return statements in non-void functions (e.g. main) return a value.

*Avoid some instances of undefined behavior and type errors in printf and scanf calls.

Several miscellaneous bugs are also fixed.

There are still a couple test cases that intentionally rely on the C89 behavior, to ensure it still works.
2022-10-17 20:17:24 -05:00

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C++

/* Conformance Test 7.5.9.1: Verification of predecrement operator */
#include <stdio.h>
#include <math.h>
int main (void)
{
int i = 5;
long L = 32777;
char ch = 'y';
unsigned int ui = 65534;
unsigned long ul = 0x7FFFFFFF;
unsigned char uch = 0x80;
comp c = 4294967295ul;
float f = 3.5;
double d = 87.65;
extended e = 92.33;
--i; --L; --ch; --ui; --ul; --uch; --c; --f; --d; --e;
if ((i != 4) || (L != 32776) || (ch != 'x') || (ui != 65533) ||
(ul != 0x7fFFffFE) || (uch != 0x7f) || (c != 4294967294ul) ||
(fabs(f - 2.5) > 0.00001) || (fabs(d - 86.65) > 0.00001) ||
(fabs(e - 91.33) > 0.00001))
goto Fail;
printf ("Passed Conformance Test 7.5.9.1\n");
return 0;
Fail:
printf ("Failed Conformance Test 7.5.9.1\n");
}