A.max(a,b) { int c; if(a>b) c=a; else c=b; return c; }
B.max(int a,int b) { int c; if(a>b) c=a; else c=b; return c; }
C.void max(int a,int b) { int c; if(a>b) c=a; else c=b; return c; }
D.int max(int a,int b) { int c; if(a>b) c=a; else c=b; return c; }