我有代码FUNC指针数组指针数组如何使指针的数组调用func指针?
#include <stdio.h>
int sum(int a, int b);
int subtract(int a, int b);
int mul(int a, int b);
int div(int a, int b);
int (*p[4]) (int x, int y);
int main(void)
{
int result;
int i, j, op;
p[0] = sum; /* address of sum() */
p[1] = subtract; /* address of subtract() */
p[2] = mul; /* address of mul() */
p[3] = div; /* address of div() */
printf("Enter two numbers: ");
scanf("%d %d", &i, &j);
printf("0: Add, 1: Subtract, 2: Multiply, 3: Divide\n");
do {
printf("Enter number of operation: ");
scanf("%d", &op);
} while(op<0 || op>3);
result = (*p[op]) (i, j);
printf("%d", result);
return 0;
}
int sum(int a, int b)
{
return a + b;
}
int subtract(int a, int b)
{
return a - b;
}
int mul(int a, int b)
{
return a * b;
}
int div(int a, int b)
{
if(b)
return a/b;
else
return 0;
}
代码功能:
#include <stdio.h>
int sum(int, int);
int product(int, int);
int subtract(int, int);
int main()
{
int i = 0;
int a = 10;
int b = 5;
int result = 0;
int (*pfun[3])(int, int);
pfun[0] = sum;
pfun[1] = product;
pfun[2] = subtract;
for(i = 0 ; i < 3 ; i++)
{
result = pfun[i](a, b);
printf("\nresult = %d", result);
}
result = pfun[1](pfun[0](a, b), pfun[2](a, b));
printf("\n\nThe product of the sum and the subtract = %d\n",result);
}
int sum(int x, int y)
{
return x + y;
}
int product(int x, int y)
{
return x * y;
}
int subtract(int x, int y)
{
return x - y;
}
现在怎么这两项目结合起来。这样指向func指针和func指针的指针数组可能有不同数量的args?任何建议。
C或C++?选一个。 –
C就足够了? – thuk
你告诉我!你在写什么语言? –