int triangle (int width, in height){

int array[5] = {0,1,2,3,4};
int area;
area = width * height/2;
return (area);
   
}

Here is the same function, but in disassembled form. The following is gdb output: 

0x8048430 <triangle>:      push    %ebp
0x8048431 <triangle+1>:    mov     %esp, %ebp
0x8048433 <triangle+3>:    push    %edi
0x8048434 <triangle+4>:    push    %esi
0x8048435 <triangle+5>:    sub     $0x30,%esp
0x8048438 <triangle+8>:    lea     0xffffffd8(%ebp), %edi
0x804843b <triangle+11>:    mov    $0x8049508,%esi
0x8048440 <triangle+16>:    cld
0x8048441 <triangle+17>:    mov    $0x30,%esp
0x8048446 <triangle+22>:    repz movsl    %ds:( %esi), %es:( %edi)
0x8048448 <triangle+24>:    mov    0x8(%ebp),%eax
0x804844b <triangle+27>:    mov    %eax,%edx
0x804844d <triangle+29>:    imul   0xc(%ebp),%edx
0x8048451 <triangle+33>:    mov    %edx,%eax
0x8048453 <triangle+35>:    sar    $0x1f,%eax
0x8048456 <triangle+38>:    shr    $0x1f,%eax
0x8048459 <triangle+41>:    lea    (%eax, %edx, 1), %eax
0x804845c <triangle+44>:    sar    %eax
0x804845e <triangle+46>:    mov    %eax,0xffffffd4(%ebp)
0x8048461 <triangle+49>:    mov    0xffffffd4(%ebp),%eax
0x8048464 <triangle+52>:    mov    %eax,%eax
0x8048466 <triangle+54>:    add    $0x30,%esp
0x8048469 <triangle+57>:    pop    %esi
0x804846a <triangle+58>:    pop    %edi
0x804846b <triangle+59>     pop    %ebp
0x804846c <triangle+60>:    ret