86 lines
1.4 KiB
C
86 lines
1.4 KiB
C
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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void miroir ( char *s, char *t); // on donne s et t sera le miroir
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void squeeze( char *s , char *t, char c); // on donne s et t sera la chaine sans le caractère c
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int lirechl(char *s, int n); // lire un nombre de caractères donné par n
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int palindrome(char *); // 1 si vrai 0 sinon
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void minuscule(char *); // met en minuscule la chaîne
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int main(int argc, char **argv)
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{
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if ( argc != 2 )
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{
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printf("Usage: %s sentence \n", *argv);
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exit(2);
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}
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char *s = argv[1];
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char t[strlen(s)];
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miroir(s,t);
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printf("%s :: %s\n",s,t);
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int rep = palindrome(s);
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if(rep==1)
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printf("Cette phrase est un palindrome\n");
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else
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printf("Cette phrase n'est pas un palindrome\n");
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}
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void miroir ( char *s, char *t)
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{
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int i=0, taille = strlen(s);
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t[taille] = '\0';
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taille--;
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while((taille - i) >= 0)
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{
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t[taille-i]=s[i];
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i++;
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}
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}
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int palindrome(char *s)
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{
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int i=0,res = 1;
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char t[strlen(s)];
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squeeze(s,t,' ');
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minuscule(t);
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while(i<strlen(t))
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{
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if(t[i]!=t[strlen(t)-i-1])
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res=0;
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i++;
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}
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return res;
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}
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void squeeze( char *s , char *t, char c)
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{
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while(*s)
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{
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if( *s != c)
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{
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*t = *s;
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t++;
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}
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s++;
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}
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*t = '\0';
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}
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int lirechl(char *s, int n)
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{
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int i, c;
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i=0;
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while( i < n && ( c = getchar() ) != '\n' )
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s[i++] = c ;
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s[i] = '\0';
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if ( c != '\n' )
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while ( getchar() != '\n' );
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return i;
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}
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void minuscule(char * s)
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{
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while(*s++ && (*s = tolower(*s)));
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}
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