Changeset df699e0 for doc/theses/mike_brooks_MMath/programs/bkgd-carray-decay.c

Timestamp:

May 24, 2024, 2:18:56 PM (6 weeks ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

master

Children:

a4808ad

Parents:

c721105

Message:

program updates to match text

File:

• doc/theses/mike_brooks_MMath/programs/bkgd-carray-decay.c (modified) (4 diffs)

doc/theses/mike_brooks_MMath/programs/bkgd-carray-decay.c

@@ -1 +1 @@
 #include <assert.h>
 int main() {
-        float a[10];                            $\C{// array}$
-        float (*pa)[10] = &a;           $\C{// pointer to array}$
-        float a0 = a[0];                        $\C{// element}$
-        float * pa0 = &(a[0]);          $\C{// pointer to element}$
+        float ar[10];                           $\C{// array}$
+        float (*pa)[10] = &ar;          $\C{// pointer to array}$
+        float a0 = ar[0];                       $\C{// element}$
+        float * pa0 = &(ar[0]);         $\C{// pointer to element}$
 
-        float * pa0x = a;                       $\C{// (ok)}$
+        float * pa0x = ar;                      $\C{// (ok)}$
         assert( pa0 == pa0x );
-        assert( sizeof(pa0x) != sizeof(a) );
+        assert( sizeof(pa0x) != sizeof(ar) );
 
         void f( float x[10], float * y ) {
@@ -14 +14 @@
                 static_assert( sizeof(y) == sizeof(void *) );
         }
-        f(0,0);
+        f( 0, 0 );
 
         // reusing local var `float a[10];`}
         float v;
-        f( a, a );                                      $\C{// ok: two decays, one into an array spelling}$
+        f( ar, ar );                            $\C{// ok: two decays, one into an array spelling}$
         f( &v, &v );                            $\C{// ok: no decays; a non-array passes to an array spelling}$
 
@@ -33 +33 @@
                 static_assert( sizeof(x) == sizeof(void *) );
         }
-        static_assert( sizeof(a) == 10 * sizeof(float) );
-        decay(a);
+        static_assert( sizeof(ar) == 10 * sizeof(float) );
+        decay( ar );
 
         void no_decay( float (*px)[10] ) {
@@ -40 +40 @@
         }
         static_assert( sizeof(*pa) == 10 * sizeof(float) );
-        no_decay(pa);
+        no_decay( pa );
 }
 
 // Local Variables: //
-// compile-command: "sed -f sedcmd bkgd-carray-decay.c | gcc -x c -" //
+// compile-command: "sed -f sedcmd bkgd-carray-decay.c | gcc-11 -Wall -Wextra -x c -" //
 // End: //