main
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Last change
on this file was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
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Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.
git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c
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Property mode
set to
100644
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File size:
585 bytes
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| 1 | #include<assert.h>
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| 2 | #include<stdio.h>
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| 3 | /*@
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| 4 | @ ensures \result == x + y;
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| 5 | */
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| 6 | int add(int x, int y){
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| 7 | return x + y;
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| 8 | }
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| 9 |
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| 10 | /*@ requires n >= 8 && n <= 10;
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| 11 | @ ensures ((n + 1) * n) == \result * 2;
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| 12 | */
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| 13 | int sum1(int n) {
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| 14 | int ret = 0;
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| 15 |
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| 16 | for(int i = 0; i <= n; i++) {
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| 17 | printf("%d\n",i);
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| 18 | ret = add(ret, i);
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| 19 | }
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| 20 | return ret;
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| 21 | }
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| 22 |
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| 23 | /*@ requires n >= 0;
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| 24 | @ ensures ((n + 1) * n) == \result * 2;
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| 25 | */
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| 26 | int sum2(int n) {
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| 27 | int ret = 0;
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| 28 | int arg;
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| 29 |
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| 30 | if(n <= 0) return 0;
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| 31 | else{
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| 32 | arg = sum2(n - 1);
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| 33 | ret = add(n, arg);
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| 34 | }
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| 35 | return ret;
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| 36 | }
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| 37 |
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| 38 | int main() {
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| 39 | add(0,0);
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| 40 | sum1(0);
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| 41 | sum2(0);
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| 42 | }
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