c语言中函数的定义和调用(计算两个数中的较大值)
1、函数定义和函数调用
#include <stdio.h> int max2(int a, int b) ## 函数头:返回类型, 函数名,形参声明a,形参声明b { if (a > b) return a; ## 函数体(复合语句) ## 函数定义 else return b; } int main(void) { int n1, n2; puts("please input two integer!"); printf("n1 = "); scanf("%d", &n1); printf("n2 = "); scanf("%d", &n2); printf("larger is: %d\n", max2(n1,n2)); ## 函数调用, n1和n2为实参。
return 0; }
↓
#include <stdio.h>
int max2(int a, int b)
{
int max;
if (a > max)
max = a;
if (b > max)
max = b;
return max;
}
int main(void)
{
int n1, n2;
puts("please input two integers!");
printf("n1 = "); scanf("%d", &n1);
printf("n2 = "); scanf("%d", &n2);
printf("larger is: %d\n", max2(n1, n2));
return 0;
}
↓
#include <stdio.h>
int max2(int a, int b)
{
int max = a;
if (b > max)
max = b;
return max;
}
int main(void)
{
int n1, n2;
puts("please input two integers!");
printf("n1 = "); scanf("%d", &n1);
printf("n2 = "); scanf("%d", &n2);
printf("larger is: %d", max2(n1, n2));
return 0;
}
↓
#include <stdio.h>
int max2(int a, int b)
{
return a > b ? a : b;
}
int main(void)
{
int n1, n2;
puts("please input two integers!");
printf("n1 = "); scanf("%d", &n1);
printf("n2 = "); scanf("%d", &n2);
printf("larger is: %d\n", max2(n1, n2));
return 0;
}