The operator used to get value at address stored in a pointer variable is

The operator used to get value at address stored in a pointer variable is

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1) What will be the output of the following C code?

 #include <stdio.h> int *f();
 int main()
 {
    int *p = f();
    printf("%d\n", *p);
 }

 int *f()
 {
    int *j = (int*)malloc(sizeof(int));
    *j = 10;
    return j;
 }

2) What will be the output of the following C code?

 #include <stdio.h>
 int main()
 {
    int i = 10;
    void *p = &i;
    printf("%f\n", *(float*)p);
    return 0;
 }

3) What will be the output of the following C code?

 #include <stdio.h>
 int main()
 {
    int i = 10;
    void *p = &i;
    printf("%d\n", (int)*p);
    return 0;
 }

4) Comment on the following pointer declaration.

 int *ptr, p;

5) What would be the equivalent pointer expression for referring the array element a[i][j][k][l]