C pointers

//http://www.programiz.com/c-programming/c-pointers
#include <stdio.h>
int main(){
    //Ampressed used to give memory location aka container where value from scanf should be saved
    //scanf("%d", &var);

    //pointers are used to store memory locations of other variables and make them accessible
    //if we stored memory locations in integers there would be no way to access them,

    //int *pc; same as int* pc;
    int *pc;
    int c;
    c = 22;
    printf("Address of c:              &c = %d\n", &c);
    printf("Value of c:                 c = %d\n\n", c);
    pc = &c;
    printf("pc = &c\n\n");
    printf("Address of pointer pc:     pc = %d\n", pc);
    printf("Content of pointer pc:    *pc = %d\n\n", *pc);
    c = 11;
    printf("c = 11\n\n");
    printf("Address of pointer pc:     pc = %d\n", pc);
    printf("Content of pointer pc:    *pc = %d\n\n", *pc);
    *pc = 2;
    printf("*pc = 2\n\n");
    printf("Address of c:              &c = %d\n", &c);
    printf("Value of c:                 c = %d\n\n", c);

    printf("=====================================\n\n");

    /* an array with 5 elements */
    double balance[5] = { 1000.0, 2.0, 3.4, 17.0, 50.0 };
    double *p;
    int i;
    // array variable name without index is same as refference to first element (&balance[0])
    p = balance;

    /* output each array element's value */
    printf("Array values using indexes\n");
    for (i = 0; i < 5; i++) {
        printf("p[%d]: %f\n", i, p[i]);
    }

    printf("Array values using pointer\n");
    for (i = 0; i < 5; i++) {
        printf("*(p + %d) : %f\n", i, *(p + i));
    }

    printf("Array values using balance as address\n");
    for (i = 0; i < 5; i++) {
        printf("*(balance + %d) : %f\n", i, *(balance + i));
    }

    printf("%d\n", sizeof(double));

    for (i = 0; i < 5; i++) {
        printf("&balance[%d] = %d\n", i, &balance[i]);
    }

    for (i = 0; i < 5; i++) {
        printf("*(balance + i) = *(%d + %d) = *(%d) = %f\n", balance, i, (balance + i), *(balance + i));
    }



    return 0;
}