c语言中,被调函数在主函数后面,那么在主函数前需要加原形说明。请举一...答:include <stdio.h> int sum(int x,int y) { int z; z=x+y; printf("%d",z); return z; } int main() { int a,b,s; printf("Input a and b:"); scanf("%d,%d",&a,&b); s=sum(a,b);}这样的就是被调用函数在主函数之前就被定义了。如果你要把被调...
C语言:在主函数中输入x,y,调用函数求出X,y的和,差,商,积,并在主函数中...答:include<stdio.h> int add(int a,int b){ return a+b;} int sub(int a,int b){ return a-b;} int mul(int a,int b){ return a*b;} float divi(int a,int b){ return 1.0*a/b;} void main(){ int x,y;scanf("%d%d",&x,&y);printf("x+y=%d\n",add(x,y));p...
c语言主函数中任意输入三个double类型的数值abc。然后调用自定义...答:); return; } if(d>0) printf("x1=%lf\nx2=%lf\n",(-b+sqrt(d))/(2*a),(-b-sqrt(d))/(2*a)); else printf("x1=x2=%lf\n",-b/(2*a));}int main(){ double a,b,c; scanf("%lf%lf%lf",&a,&b,&c); fun(a,b,c); return 0;...