41 lines
597 B
C
41 lines
597 B
C
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#include <stdio.h>
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void add_one(int *x);
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int main(void){
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int j;
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int *p;
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int k;
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j = 5;
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/* Pointer "p" is pointing to address "j" */
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p =&j;
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/* Set k to the value of p
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* the '*' is the dereference operater
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* this means the value that p is pointing to
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* instead of the pointer itself*/
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k = *p;
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printf("%d\n", *p);
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printf("This is k: %d\n", k);
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/*Here we pass the address of j to the function */
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add_one(p);
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/*Or don't use any pointers
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* add_one(&j);
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*
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* here we pass by address value
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*/
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printf("%d\n", *p);
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return 0;
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}
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void add_one(int *x){
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*x = *x+1;
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}
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