/*@ requires valid_string(argv);
@ ensures \result==string_len(argv);
*/
int countOne(char* argv) {
int r=0;
if(argv[0]==0) return 0;
r++;
r+=countOne(argv+1);
return r;
}
/* Calcul de la longueur d'une chaine */
int countOne(char* argv) {
int r=0;
switch (argv[0]) {
case 0: return 0;
case 1:
case 2:
case 3:
default:
r++;
r+=countOne(argv+1);
}
return r;
}
int countTransfer(int a,int b){
int x = a^b;
return countOne(x);
}
/*@ requires argc>0 && \valid(argv) &&
\valid_range(argv,0,argc) &&
(\forall integer i; 0<=i<argc ==> valid_string(argv[i]));
@ ensures \result>=0;
*/
int count(int argc, char** argv) {
// printf(" --> '%s'\n",argv[0]);
int s=countOne(argv[0]);
if (argc>1) s+=count(argc-1,argv+1);
return s;
}
/* Somme de chacune des longueurs */
int count(int argc, char** argv) {
if (argc>0) return countOne(argv[0])+count(argc-1,argv+1);
return 0;
}
