C / C ++Pointer arithmetic in

Pointer arithmetic is used to implement arithmetic operations such as addition, subtraction, and increment in C language. There are four pointer algorithms, such as addition, subtraction, increment, and decrement.32bit computers, it will increase or decrease2, and will increase or decrease2 *numbers.64bit computers, it will increase or decrease4, and will increase or decrease4 *numbers.

This is an example of pointer arithmetic in C language

Example

#include <stdio.h>
int main() {
　　　int val =　28;
　　　int　*pt;
　　　pt = &val;
　　　printf("Address of pointer: 睵n", pt);
　　　pt = pt　+　5;
　　　printf("Addition to pointer: 睵n", pt);
　　　pt = pt　-　5;
　　　printf("Subtraction from pointer: 睵n", pt);
　　　pt = pt　+　1;
　　　printf("Increment to pointer: 睵n", pt);
　　　pt = pt　-　1;
　　　printf("Decrement to pointer: 睵n", pt);
　　　return 0;
}

Output results

Address of pointer:　3938439860
Addition to pointer:　3938439880
Subtraction from pointer:　3938439860
Increment to pointer:　3938439864
Decrement to pointer:　3938439860

Arithmetic operations (addition, subtraction, etc.) are applied to pointer variables in the above program* pt.

int　*pt;
pt = &val;
printf("Address of pointer: 睵n", pt);
pt = pt　+　5;
printf("Addition to pointer: 睵n", pt);
pt = pt　-　5;
printf("Subtraction from pointer: 睵n", pt);
pt = pt　+　1;
printf("Increment to pointer: 睵n", pt);
pt = pt　-　1;
printf("Decrement to pointer: 睵n", pt);