[C/cpp Series Knowledge] Type difference of character literals and bool in C and C + +

Each solid in the c/c+ (every literal) has a type, for example, 10 is an int, so SIZIOF (10) and sizeof (int) are the same, but the character-solid (' a ') has different variable types in C and C + +.

In C, ' a ' is considered int, and in C + +, ' a ' is considered to be a char type.

int Main () {   printf("sizeof (' V ') =%d sizeof (char) =%d"sizeof('  V'sizeof(char));    return 0 ;}

Results:

C result– sizeof (' V ') = 4 sizeof (char) = 1

C + + result– sizeof (' V ') = 1 sizeof (char) = 1

The above behavior can also reflect C + + function overloading

 void  foo (char   c) {printf (  from Foo:char   "  void  foo (int   i) {printf (  from foo:int   " );}  int   main () {foo (  '  

Then call void foo (char c)

3) Types of Boolean results is different in C and C + +.

// output = 4 in C (which is size of int)printf ("%d"sizeof(1= =1< /c8>//  output = 1 in C + + (which is the size of the Boolean datatype)sizeof(1==1

[C/cpp Series knowledge] Type difference of character literals and bool in C and C + +