C语言基础练习9

1.若外部变量与局部变量同名，分析结果

#include<stdio.h>int a = 3, b = 5;int main(){int max(int a, int b);int a = 8;printf("max=%d\n", max(a, b));    return 0;}int max(int a, int b){int c;c = a > b ? a : b;return(c);}

运行结果：

2.调用函数，求3个整数中的大者

#include<stdio.h>int main(){int max();extern int A, B, C;printf("Please enter three integer numbers:");scanf_s("%d %d %d", &A, &B, &C);printf("max is %d\n", max());    return 0;}int A, B, C;int max(){int m;m = A > B ? A : B;if (C > m) m = C;return(m);}

运行结果：