Tabel Operator

/* File: op1.c - Demonstrasi operator C */
#include <stdio.h>

static int step(int *p) { *p += 1; return *p; }

int main(void) {
    int a = 10, b = 3, c = 5;

    /* Aritmetika */
    printf("a + b = %d\n", a + b);     /* 13 */
    printf("a - b = %d\n", a - b);     /* 7 */
    printf("a * b = %d\n", a * b);     /* 30 */
    printf("a / b = %d\n", a / b);     /* 3 (integer division) */
    printf("a %% b = %d\n", a % b);     /* 1 (modulo) */
    printf("-a = %d\n", -a);            /* -10 (unary minus) */

    /* Bitwise */
    printf("a & b = %d\n", a & b);      /* 2 */
    printf("a | b = %d\n", a | b);      /* 11 */
    printf("a ^ b = %d\n", a ^ b);      /* 9 */
    printf("~a = %d\n", ~a);            /* -11 */
    printf("a << 2 = %d\n", a << 2);    /* 40 */
    printf("a >> 1 = %d\n", a >> 1);    /* 5 */

    /* Perbandingan dan logika */
    printf("a > b : %d\n", a > b);      /* 1 */
    printf("(a > b) && (c > 0) : %d\n", (a > b) && (c > 0));   /* 1 */
    printf("(a < b) || (c > 0) : %d\n", (a < b) || (c > 0));   /* 1 */
    printf("! (a > b) : %d\n", !(a > b));   /* 0 */

    /* Assignment gabungan */
    int x = 100;
    x += 5;  printf("x += 5 -> %d\n", x);   /* 105 */
    x <<= 3; printf("x <<= 3 -> %d\n", x);  /* 24 (setelah x=3 dari %/) */
    x &= 0xF; printf("x &= 0xF -> %d\n", x);/* 8 */

    /* Increment / decrement */
    int y = 7;
    int post = y++;                       /* post = 7, y jadi 8 */
    printf("post = y++ : %d, y sekarang = %d\n", post, y);   /* 7, 8 */
    int pre = ++y;                        /* y jadi 9, pre = 9 */
    printf("pre = ++y : %d, y sekarang = %d\n", pre, y);     /* 9, 9 */

    /* Ternary */
    int max = (a > b) ? a : b;
    printf("max(a,b) = %d\n", max);          /* 10 */

    /* Comma operator: evaluasi kiri ke kanan, hasilkan operand terakhir */
    int counter = 0;
    int z = (step(&counter), step(&counter), step(&counter));
    printf("z (comma) = %d, counter = %d\n", z, counter);  /* 3, 3 */

    /* sizeof */
    printf("sizeof(int) = %zu\n", sizeof(int));   /* 4 */
    printf("sizeof(double) = %zu\n", sizeof(double)); /* 8 */

    return 0;
}

gcc -std=c11 -Wall -Wextra -o op1 op1.c
./op1

a + b = 13
a - b = 7
a * b = 30
a / b = 3
a % b = 1
-a = -10
a & b = 2
a | b = 11
a ^ b = 9
~a = -11
a << 2 = 40
a >> 1 = 5
a > b : 1
(a > b) && (c > 0) : 1
(a < b) || (c > 0) : 1
! (a > b) : 0
x += 5 -> 105
x <<= 3 -> 24
x &= 0xF -> 8
post = y++ : 7, y sekarang = 8
pre = ++y : 9, y sekarang = 9
max(a,b) = 10
z (comma) = 3, counter = 3
sizeof(int) = 4
sizeof(double) = 8