passing a pointer to a function

1// passing a pointer to function in C
2// It increaments the salary of an employee
3
4
5#include <stdio.h>
6void salaryhike(int  *var, int b)
7{
8    *var = *var+b;
9}
10int main()
11{
12    int salary=0, bonus=0;
13    printf("Enter the employee current salary:"); 
14    scanf("%d", &salary);
15    printf("Enter bonus:");
16    scanf("%d", &bonus);
17    salaryhike(&salary, bonus);
18    printf("Final salary: %d", salary);
19    return 0;
20}

1#include <stdio.h>
2#include <stdlib.h>
3#include <math.h>
4void add(int* a, int* b, int* c)
5{
6    *c = *a + *b;
7}
8int main()
9{
10	int a, b, c;
11	a = 3;
12	b = 5;
13	add(&a, &b, &c);
14	printf("%d", c);
15}

1/**
2* myFunction - a function that recieves an integer pointer
3*/
4
5void myFunction(int *param) {
6   .
7   .
8   .
9}