int max(int a，int b)
{
return a & gtb？ A: b;
}
2、
# include & ltstdio.h & gt// Link standard header files.
#define N 5 // define the constant n and assign it to 5.
Void main() // main function entry
{//indicates the beginning of the main function.
int i，j； //define integer variables I and J.
Int grade[N], temp// defines an n-dimensional (n = 5, that is, five-dimensional) plastic array and a plastic variable temp.
Printf ("Enter 5 digits \ n"); //Explicitly "Enter 5 Numbers" on the screen and wrap the line.
for(I = 0； I & ltn；; I++) // Start the for loop, starting from I = 0, adding 1 each time until I = 4, and * * * needs to loop for 5 times.
{//Cycle body start
Scanf("%d ",& grade [i]); //Get the integer values input by the user in turn and store them in the array grade.
}//End of loop
for(I = 0； I & ltn；; I++) // Start the outer loop of for, starting with I = 0 and adding 1 at a time until i=4.
{//The external circulation body begins.
for(j = 0； j & ltn- 1-I； J++) // Start the outer loop for, starting with J = 0, and add 1 each time until I equals N-j- 1 of the outer loop.
{//The internal circulation body starts.
if(grade[j]& lt； Grade[j+ 1]) // conditional judgment
{//If the number before the integer array is less than the number after it, execute the following statement.
temp = grade[j+ 1]； //Assign a larger number to temp.
Grade [j+ 1]= grade [j]; //Assign a smaller number to the later variable in the array.
Grade [j]= temperature; //Assign a larger number to the previous variable in the array.
}//From then on, the exchange of large and small variables is completed, and the large value is proposed.
}//End the internal loop
}//Loop outside and inside the junction to complete sorting.
Printf ("Last Sort: \ n"); //Explicitly display "Last Sort as:" on the screen and wrap.
for(I = 0； I & ltn；; I++) // Similar to the beginning of a loop.
{//Start cyclic output.
Printf("%d ",grade [i]); //Only the five values in the array are output one by one here.
}//End loop output
printf(" \ n ")； //Output wraps to the screen, no effect can be seen, and it can be deleted.
}//End the main () function.