Java | Java | C |
---|---|---|
comment | /* comment */
// another kind of comment |
/* comment */ |
assignment | i= i+j; | i= i+j; |
block | {
statement 1; statement 2; } |
{
statement 1; statement 2; } |
conditional statement | if (expression)
statement
else statement |
if (expression)
statement
else statement |
for loop | for (int i=1; i<=10; i++) statement | for (int i=1; i<=10; i++) statement |
for loop | for (int i=10; i>0; i--) statement | for (int i=10; i>0; i--) statement |
while loop | while (i < 10) statement | while (i < 10) statement |
return statement | return ; (in a procedure)
return x; (in a function) |
return ;
return x; |
terminate a loop | break; | break; |
terminate a loop body | continue; | continue; |
function call | m(y,z) | m(y,z) |
procedure call | m(y,z); | m(y,z); |
equality and inequality | == and != | == and != |
logical operators | && (logical-and)
|| (logical-or) ! (logical-complement) |
&&
|| ! |
arithmetic operators | unary -, +, -, *, /, % | unary -, +, -, *, /, % |
string catenation | + | /* no C equivalent */ |
integral types | byte (8 bits), short
(16 bits)
int (32 bits) , long (64 bits) |
short , int , long |
floating point types | float (32 bit), double (64 bit) | float , double |
character type | char | char |
boolean type | boolean | int (C has no type boolean) |
declarations of integer variables | int i,j,k; | int i,j,k; |
declaration of a constant | final int MAX= 100; | #define MAX = 100; |
declaration and creation of an array | int[] A= new int[10]; | int A[10]; |
declaration and creation of two-dimensional array | float[][] B= new float[10][100]; | float B[10][100]; |
declaration of a string variable | String s; | char *s; s = malloc(10); |
declaration of a C "struct" | class r { char a; int b: } | struct r { char a; int b; } |
declaration of a pointer variables | /* no Java equivalent. */ | int *b; |
declaration of a function | char a (int b) {
... return 'X'; } |
char a (int b) {
... return 'X'; } |