168 lines
3 KiB
C
168 lines
3 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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*/
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/* Author: E.G. Keizer */
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static char rcs_id[]= "$Id$" ;
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/* test for structure parameters, assignment and return */
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# define ASIZE 26
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struct w1 {
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int w1_i ;
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} ;
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struct w2 {
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int w2_i ;
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long w2_l ;
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} ;
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struct w3 {
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char w3_a[ASIZE] ;
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unsigned w3_u ;
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} ;
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struct w1 es1 ;
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struct w1 es2[3] ;
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main() {
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asst() ;
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part() ;
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callt() ;
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return 0 ;
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}
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asst() {
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/* test structure assignment */
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struct w1 st1, st2, *st3 ;
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struct w2 s2t1, s2t2, *s2t3 ;
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struct w3 s3t1, s3t2, *s3t3 ;
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register int i ;
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printf("w1\n") ;
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st1.w1_i = 506 ;
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st2 = st1 ;
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printf("\tst2.w1_i %d\n",st2.w1_i) ;
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st3 = &st1 ;
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printf("\t(*st3).w1_i %d\n",(*st3).w1_i) ;
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es1.w1_i = 711 ;
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st1 = st2 = es1 ;
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printf("\tst1.w1_i %d\n",st1.w1_i) ;
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printf("\tst2.w1_i %d\n",st2.w1_i) ;
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es2[2] = st1 ;
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printf("\tes2[2].w1_i %d\n",es2[2].w1_i) ;
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st1.w1_i = -577 ;
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es1.w1_i = 577 ;
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for ( i=0 ; i<2 ; i++ ) {
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st2 = ( i ? st1 : es1 ) ;
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printf("\tst2.w1_i %d\n",st2.w1_i) ;
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}
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st1 = ( i , es1 ) ;
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printf("\tst1.w1_i %d\n",st1.w1_i) ;
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printf("w2\n") ;
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s2t1.w2_i = 18000 ;
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s2t1.w2_l = 31415 ;
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s2t2 = s2t1 ;
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printf("\ts2t2: .w2_i %d .w2_l %ld\n",s2t2.w2_i,s2t2.w2_l) ;
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s2t3 = &s2t2 ;
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printf("\ts2t3->w2_l %ld\n",s2t3->w2_l) ;
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printf("w3\n") ;
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for ( i = 0 ; i<ASIZE ; i++ ) {
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s3t1.w3_a[i]= 'a'+i ;
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}
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s3t1.w3_u = 0x8000 ;
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s3t2 = s3t1 ;
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s3t3 = &s3t1 ;
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for ( i = 0 ; i<ASIZE ; i++ ) {
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printf("s3t2.w3_a[%2d] %c\n",i,s3t2.w3_a[i]) ;
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}
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printf("s3t2.w3_u %x\n",s3t2.w3_u) ;
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s3t2.w3_u = 1415 ;
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for ( i = 0 ; i<ASIZE ; i++ ) {
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s3t2.w3_a[i]= 'A'+i ;
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}
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*s3t3 = s3t2 ;
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for ( i = 0 ; i<ASIZE ; i++ ) {
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printf("s3t1.w3_a[%2d] %c\n",i,s3t1.w3_a[i]) ;
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}
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printf("s3t1.w3_u %x",s3t1.w3_u) ;
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}
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struct w3 epars ;
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part() {
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/* test structure parameters */
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struct w3 pars ;
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register i ;
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for ( i=0 ; i<ASIZE ; i++ ) {
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pars.w3_a[i]=i+1 ;
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}
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pars.w3_u = 281 ;
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printf("\nstructure parameters\n") ;
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psc(-1,pars,1000) ;
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}
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psc(before,str,after) int before, after ; struct w3 str ; {
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register int i ;
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printf("before %d\n",before) ;
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for ( i=0 ; i<ASIZE ; i++ ) {
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printf("str.w3_a[%2d]\t%d\n",i,str.w3_a[i]) ;
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}
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printf("str.w3_u %x\n",str.w3_u) ;
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printf("after %d\n",after) ;
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}
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callt() {
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/* test structure valued functions */
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extern struct w3 setp1(), setp2() ;
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struct w3 myp ;
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register int i ;
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printf("\nStucture valued functions\n") ;
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myp = setp1(ASIZE) ;
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printf("myp.w3_a:\n") ;
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for ( i=0 ; i<ASIZE ; i++ ) {
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printf("\t%2d\t%d\n",i,myp.w3_a[i]) ;
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}
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myp = setp2() ;
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for ( i=0 ; i<ASIZE ; i++ ) {
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printf("\t%2d\t%d\n",i,myp.w3_a[i]) ;
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}
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}
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struct w3 setp1(count) {
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struct w3 myp ;
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if ( count<=0 ) {
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return(myp) ;
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}
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myp = setp1(count-1) ;
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myp.w3_a[count-1] = 99-count-1 ;
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return(myp) ;
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}
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static struct w3 myp2 ;
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struct w3 setp2() {
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struct w3 *w3p ;
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register i ;
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for ( i=0 ; i<ASIZE ; i++ ) {
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myp2.w3_a[i]= 99+i ;
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}
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w3p = &myp2 ;
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return(*w3p) ;
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}
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