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Program_function_01

Using Function: Finding the maximum of three integers.
/* Fig. 5.4: fig05_04.c
    Finding the maximum of three integers */
 #include <stdio.h>
int maximum( int x, int y, int z ); /* function prototype */

 /* function main begins program execution */
 int main( void )
 {
    int number1; /* first integer */
    int number2; /* second integer */
    int number3; /* third integer */

    printf( "Enter three integers: " );
    scanf( "%d%d%d", &number1, &number2, &number3 );

    /* number1, number2 and number3 are arguments
       to the maximum function call */
    printf( "Maximum is: %d\n",  );
    return 0; /* indicates successful termination */
 } /* end main */

/* Function maximum definition */
/* x, y and z are parameters */
int maximum( int x, int y, int z )
{
   int max = x; /* assume x is largest */

   if ( y > max ) { /* if y is larger than max, assign y to max */
      max = y;
   } /* end if */
if ( z > max ) { /* if z is larger than max, assign z to max */
      max = z;

} /* end if */

   return max; /* max is largest value */
} /* end function maximum */
Output:
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