online compiler and debugger for c/c++

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#include <stdio.h> void swap(int*, int*); //함수 원형 int main(void) { int a,b; a = 10; b = 20; printf("before wap() : a = %d, b = %d\n", a, b); //호출 전 a와 b의 값 swap(&a, &b); //a와b의 주소 전달 printf("after swap() : a = %d, b = %d\n", a, b); //호출 후 a와 b의 값 return 0; } void swap(int *a, int *b) { int temp; temp = *a; *a = *b; *b = temp; printf("in swap() : a = %d, b = %d\n", a, b); }

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