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/* ECP: FILEname=fig1_1.c */ /* 1*/ #include <stdio.h> /* 2*/ main( void ) /* 3*/ { /* 4*/ printf( "Is there anybody out there?\n" ); /* 5*/ return 0; /* 6*/ } /* ECP: FILEname=fig1_2.c */ /* 1*/ #include <stdio.h> /* 2*/ /* Read Items, Compute Their Average */ /* 3*/ main( void ) /* 4*/ { /* 5*/ int ItemsRead = 0; /* 6*/ double ThisItem, Sum = 0.0; /* 7*/ printf( "Enter as many items as you want\n" ); /* 8*/ printf( "Terminate with non-double or EOF marker\n" ); /* 9*/ while( scanf( "%lf", &ThisItem ) == 1 ) /*10*/ { /*11*/ ItemsRead++; /*12*/ Sum += ThisItem; /*13*/ } /*14*/ printf( "The average of %d items was %f\n", /*15*/ ItemsRead, Sum / ItemsRead ); /*16*/ return 0; /*17*/ } /* ECP: FILEname=fig1_3.c */ /* 1*/ #include <stdio.h> /* 2*/ unsigned long int /* 3*/ Factorial( unsigned long int N ) /* 4*/ { /* 5*/ int i; /* 6*/ unsigned long int Answer = 1; /* 7*/ for( i = 1; i <= N; i++ ) /* 8*/ Answer *= i; /* 9*/ return Answer; /*10*/ } /*11*/ main( void ) /*12*/ { /*13*/ int i; /*14*/ const int MaxNum = 12; /*15*/ printf( " N N!\n" ); /*16*/ for( i = 0; i <= MaxNum; i++ ) /*17*/ printf( "%2d %10lu\n", i, Factorial( i ) ); /*18*/ return 0; /*19*/ } /* ECP: FILEname=fig1_5.c */ /* 1*/ #include <stdio.h> /* 2*/ /* Compute Frequency Of Lottery Numbers */ /* 3*/ #define MaxNum 49 /* Numbers Range From 1 To 49 */ /* 4*/ main( void ) /* 5*/ { /* 6*/ int Count[ MaxNum + 1 ]; /* Frequency Of Each Number */ /* 7*/ int Number; /* 8*/ int i; /* 9*/ for( i = 0; i <= MaxNum; i++ ) /*10*/ Count[ i ] = 0; /*11*/ /* Note: No Prompting For Input */ /*12*/ while( scanf( "%d", &Number ) == 1 ) /*13*/ if( Number < 1 || Number > MaxNum ) /*14*/ printf( "Out of range number ignored\n" ); /*15*/ else /*16*/ Count[ Number ]++; /*17*/ /* Output The Data, Seven Numbers Per Line */ /*18*/ for( i = 1; i <= MaxNum; i++ ) /*19*/ { /*20*/ printf( "%3d:%4d", i, Count[ i ] ); /*21*/ if( i % 7 == 0 ) /*22*/ printf( "\n" ); /*23*/ else /*24*/ printf( " " ); /*25*/ } /*26*/ return 0; /*27*/ } /* ECP: FILEname=fig1_6.c */ /* 1*/ /* Return 1 if Str1 And Str2 Are Equal */ /* 2*/ int /* 3*/ IsEqual( char Str1[ ], char Str2[ ] ) /* 4*/ { /* 5*/ int i; /* 6*/ for( i = 0; Str1[ i ] == Str2[ i ]; i++ ) /* 7*/ if( Str1[ i ] == '\0' ) /* 8*/ return 1; /* Equal Strings */ /* 9*/ return 0; /* Not Equal */ /*10*/ } /* ECP: FILEname=fig1_8.c */ /* 1*/ #include <stdio.h> /* 2*/ /* Read And Write Strings */ /* 3*/ #define MaxLen 512 /* 4*/ main( void ) /* 5*/ { /* 6*/ char Str[ MaxLen + 1 ]; /* 7*/ while( scanf( "%s", Str ) == 1 ) /* 8*/ printf( "I read %s\n", Str ); /* 9*/ return 0; /*10*/ } /* ECP: FILEname=fig1_9.c */ /* 1*/ struct Complex /* 2*/ AddComplex( struct Complex X, struct Complex Y ) /* 3*/ { /* 4*/ struct Complex Sum; /* 5*/ Sum.Real = X.Real + Y.Real; /* 6*/ Sum.Imag = X.Imag + Y.Imag; /* 7*/ return Sum; /* 8*/ } /* ECP: FILEname=fig1_10.c */ /* 1*/ #include <stdio.h> /* 1*/ void /* 2*/ Swap( int * const X, int * const Y ) /* 3*/ { /* 4*/ int Tmp; /* 5*/ Tmp = *X; /* 6*/ *X = *Y; /* 7*/ *Y = Tmp; /* 8*/ } /* 1*/ main( void ) /* 2*/ { /* 3*/ int A = 5, B = 7; /* 4*/ Swap( &A, &B ); /* Must Pass The Address */ /* 5*/ printf( "%d %d\n", A, B ); /* 6*/ return 0; /* 7*/ } /* ECP: FILEname=fig1_11.c */ /* 1*/ typedef struct Complex Complex; /* 2*/ void AddComplex( const Complex *X, const Complex *Y, Complex *Sum ) /* 3*/ { /* 4*/ Sum->Real = X->Real + Y->Real; /* 5*/ Sum->Imag = X->Imag + Y->Imag; /* 6*/ } /* ECP: FILEname=fig1_12.c */ /* 1*/ #include <stdio.h> /* 2*/ /* Read Items, Compute Their Average */ /* 3*/ main( void ) /* 4*/ { /* 5*/ FILE *Fp; /* File Pointer */ /* 6*/ char FileName[ 256 ]; /* File Name */ /* 7*/ int ItemsRead = 0; /* 8*/ double ThisItem, Sum = 0.0; /* 9*/ printf( "Enter input file: " ); /*10*/ if( scanf( "%s", FileName ) != 1 || /*11*/ ( Fp = fopen( FileName, "r" ) ) == NULL ) /*12*/ { /*13*/ fprintf( stderr, "Cannot open input file\n" ); /*14*/ return 1; /*15*/ } /*16*/ while( fscanf( Fp, "%lf", &ThisItem ) == 1 ) /*17*/ { /*18*/ ItemsRead++; /*19*/ Sum += ThisItem; /*20*/ } /*21*/ printf( "The average of %d items was %f\n", /*22*/ ItemsRead, Sum / ItemsRead ); /*23*/ return 0; /*24*/ } /* ECP: FILEname=fig2_1.c */ /* * A Simple First Program. * MW, 10/13/95 */ /* 1*/ #include <stdio.h> /* 2*/ main( void ) /* 3*/ { /* 4*/ printf( "Testing 123\n" ); /* 5*/ } /* ECP: FILEname=fig2_2.c */ #include<stdio.h> main(void){printf("Testing 123\n");} /* ECP: FILEname=fig2_3.c */ /* 1*/ /* This comment ends early on the next line. /* 2*/ * This is not in the comment! /* 3*/ * Neither is this; the next line is also an error. /* 4*/ */ /* 5*/ #include <stdio.h> /* 6*/ main( void ) /* 7*/ { /* 8*/ printf( "Testing 123\n" ); /* 9*/ } /* ECP: FILEname=fig2_4.c */ /* 1*/ #include <stdio.h> /* 2*/ main( void ) /* 3*/ { /* 4*/ int First = 12, Second, Third = 6; /* 5*/ Second = 8; /* 6*/ printf( "The ints: %d %d %d\n", First, Second, Third ); /* 7*/ First = Third; /* 8*/ printf( "The ints: %d %d %d\n", First, Second, Third ); /* 9*/ Third += Second; /*10*/ printf( "The ints: %d %d %d\n", First, Second, Third ); /*11*/ First = Second + Third; /*12*/ printf( "The ints: %d %d %d\n", First, Second, Third ); /*13*/ First++; /*14*/ ++Second; /*15*/ printf( "The ints: %d %d %d\n", First, Second, Third ); /*16*/ Third = First++ + ++Second; /*17*/ printf( "The ints: %d %d %d\n", First, Second, Third ); /*18*/ } /* ECP: FILEname=fig2_5.c */ /* 1*/ #include <stdio.h> /* 2*/ main( void ) /* 3*/ { /* 4*/ double A = 373737.0; /* 5*/ double B; /* 6*/ B = A*A*A + 0.37/A - A*A*A - 0.37/A; /* 7*/ printf( "The value of B is %f.\n", B ); /* 8*/ } /* ECP: FILEname=fig2_13.c */ /* 1*/ /* Faculty Profile Fields */ /* 2*/ #define Sex 0x0001 /* On If Female */ /* 3*/ #define Minority 0x0002 /* On If In A Minority Group */ /* 4*/ #define Veteran 0x0004 /* On If Veteran */ /* 5*/ #define Disabled 0x0008 /* On If Disabled */ /* 6*/ #define UScitizen 0x0010 /* On If Citizen */ /* 7*/ #define Doctorate 0x0020 /* On If Holds A Doctorate */ /* 8*/ #define Tenured 0x0040 /* On If Tenured */ /* 9*/ #define TwelveMonth 0x0080 /* On If On 12 Month Contract */ /*10*/ #define Visitor 0x0100 /* On If Not Permanent Faculty */ /*11*/ #define Campus 0x0200 /* On If Work Is At Main Campus */ /*12*/ #define Rank 0x0c00 /* Two Bits To Represent Rank */ /*13*/ #define Assistant 0x0400 /* Assistant Professor */ /*14*/ #define Associate 0x0800 /* Associate Professor */ /*15*/ #define Full 0x0c00 /* Full Professor */ /*16*/ #define College