不会
程序代码:#include <stdio.h>
int isMax ( int max, int a)
{
if ( max > a ){
return max;
} else {
return a;
}
}
int isMin ( int min, int a)
{
if ( min < a ) {
return min;
} else {
return a;
}
}
int main (void)
{
int a,b,c,d,max,min;
printf ( "enter four degit:");
scanf ( "%i%i%i%i", &a, &b, &c, &d);
max = isMax ( a, b);
max = isMax ( max, c);
max = isMax ( max, d);
min = isMin ( a, b);
min = isMin ( min, c);
min = isMin ( min, d);
printf( "largest:%d \nmin = %d\n", max, min);
system("PAUSE");
return 0;
}

程序代码:#include <stdio.h>
int main (void)
{
int a,b,c,d,max,min;
printf ( "enter four degit:");
scanf ( "%i%i%i%i", &a, &b, &c, &d);
if ( a > b ) {
max = a;
min = b;
} else {
max = b;
min = a;
}
if ( c > d ) {
a = c;
b = d;
} else {
a = d;
b = c;
}
if ( max < a) {
max = a;
}
if ( min > b) {
min = b;
}
printf( "largest:%d \nmin = %d\n", max, min);
system("PAUSE");
return 0;
}
