includeint max(int x,int y){ int z;if(x>y)z=x;else z=y;return(z);} void main(){ int max(int x,int y);int a,b,c;scanf("%d,%d",&a,&b);c=max(a,b);printf("max=%d", int max(int x,int y){ int z; if (x>y) z=x; else z=y; return(z);}//x,y和int之间...