Основы программирования в Linux

/* 17 */  int i = 0, j = 0;
/* 18 */  int s;
/* 19 */
/* 20 */  for(; i < n & s != 0; i++) {
/* 21 */   s = 0;
/* 22 */   for(j = 0; j < n; j++) {
/* 23 */    if(a[j].key > a[j+1].key) {
/* 24 */     item t = a[j];
/* 25 */     a[j] = a[j+1];
/* 26 */     a[j+1] = t;
/* 27 */     s++;
/* 28 */    }
/* 29 */   }
/* 30 */   n--;
/* 31 */  }
/* 32 */ }
/* 33 */
/* 34 */ main()
/* 35 */ {
/* 36 */  sort(array,5);
/* 37 */ }
В этой версии есть проблема в строке 20, где вместо предполагаемого оператора 
&&
 применяется оператор 
&
. Далее приведен отредактированный пример вывода 
splint
, выполненной с этой версией программы. Обратите внимание на то, как она обнаруживает проблемы в строке 20 — тот факт, что вы не инициализировали переменную 
s
 и что возможны проблемы с условием из-за некорректного оператора.
[email protected]:~/BLP4e/chapter10&gt; <b>splint -strict debug0.c</b>
Splint 3.1.1 --- 19 Mar 2005
debug0.c:7:18: Read-only string literal storage used as initial value for
               unqualified storage: array[0].data = &quot;bill&quot;
A read-only string literal is assigned to a non-observer reference. (Use -readonlytrans to inhibit warning)
debug0.c:8:18: Read-only string literal storage used as initial value for
               unqualified storage: array[1].data = &quot;neil&quot;
debug0.c:9:18: Read-only string literal storage used as initial value for
               unqualified storage: array[2].data = &quot;john&quot;
debug0.с:10:18: Read-only string literal storage used as initial value for
               unqualified storage: array[3].data = &quot;rick&quot;
debug0.c:11:18: Read-only string literal storage used as initial value for
               unqualified storage: array[4].data = &quot;alex&quot;
debug0.с:14:22: Old style function declaration
 Function definition is in old style syntax. Standard prototype syntax is
 preferred. (Use -oldstyle to inhibit warning)
debug0.с: (in function sort)
<i>debug0.c:20:31: Variable s used before definition</i>
 
<i> An rvalue is used that may not be initialized to a value on some execution</i>
<i> path. (Use -usedef to inhibit warning)</i>
debug0.с:20:23: Left operand of &amp; is not unsigned value (boolean):
               i &lt; n &amp; s != 0
 An operand to a bitwise operator is not an unsigned values. This may have
 unexpected results depending on the signed representations. (Use
 -bitwisesigned to inhibit warning).
<i>debug0.c:20:23: Test expression for for not boolean, type unsigned int:</i>
<i>               i &lt; n &amp; s != 0</i>
<i> Test expression type is not boolean or int. (Use -predboolint to inhibit </i>
<i> warning);</i>
debug0.с:25:41: Undocumented modification of a[]: a[j] = a[j + 1]
 An externally-visible object is modified by a function with no /*@[email protected]*/
 comment. The /*@modifies ... @*/ control comment can be used to give a
 modifies list for an unspecified function. (Use -modnomods to inhibit
 warning)
debug0.c:26:41: Undocumented modification of a[]: a[j + 1] = t
debug0.c:20:23: Operands of &amp; are non-integer (boolean) (in post loop test):
               i &lt; n &amp; s != 0
 A primitive operation does not type check strictly. (Use -strictops to
 inhibit warning)
debug0.с:32:14: Path with no return in function declared to return int
 There is a path through a function declared to return a value on which there
 is no return statement. This means the execution may fall through without
 returning a meaningful result to the caller. (Use -noret to inhibit
 warning)
debug0.с:34:13: Function main declared without parameter list
 A function declaration does not have a parameter list. (Use -noparams
 to inhibit warning)
debug0.с: (in function main)
debug0.с:36:22: Undocumented use of global array
 A checked global variable is used in the function, but not listed in its
 globals clause. By default, only globals specified in .lcl files are
 checked.
 To check all globals, use +allglobals. To check globals selectively use
 
 /*@[email protected]*/ in the global declaration. (Use -globs to inhibit warning)
debug0.с:36:17: Undetected modification possible from call to unconstrained