#define SUB(X,Y) X*Y main() { int a=3 ,b=4,c; c=SUB(a+b++,b...答:以下为我测试用的源代码:include <stdio.h> include <stdlib.h> define SUB(X,Y) X*Y int main(int argc, char *argv[]){ int a=3, b=4;printf("%d\n",SUB(a+b++,b)); /*==19*/ printf("%d\n",b); /*==5*/ a=3, b=4;printf("%d\n",SUB(a+(++b),b)); /...
C语言编程答:3.include"stdio.h"include"math.h"void main(){float x,y,a,b,c,d;int n=0;y=1;printf("input a,b,c,d:\n");scanf("%f%f%f",&a,&b,&c,&d);do{x=y;y=x-(a*x*x*x+b*x*x+c*x+d)/(3*a*x*x+2*b*x+c);n++;} while(fabs(y-x)>1e-5);printf("x=%f...