#include
int main()
{
int max4 (int a,int b,int c,int d);
int a,b,c,d,max;
printf("Please enter 4 interger numbers:");
scanf("%d,%d,%d,%d,%d",&a,&b,&c,&d);
max=max4(a,b,c,d);
printf("the largerst number is :%d\n",max);
return 0;
}
int max4 (int a,int b, int c,int d)
{
int max2 (int a,int b);
int m;
m=max2(a,b);
m=max2(m,c);
m=max2(m,d);
return (m);
}
int max2 (int a,int b)
{
if (a>=b)
return a;
else
return b;
}
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