Chaine de caracteere

#include <stdio.h>


#include <stdio.h>


int main(){
    char *ch2="bonjour";
    char *ch1="bravo";
    
    int i=0,j=0;
    while(i<strlen(ch2)){
                         j=0;
                        while(j<strlen(ch1) && ch1[j]!=ch2[i])
                                            j++;
               
                       if(j==strlen(ch1)) printf("%c ",ch2[i]); 
                        i++;                   
                        
    }                
    puts("");
    system("pause");                                      

    return 0;
}

#include <stdio.h>

void suppr (char *, char *);

int main ()
{
  char ch1[] = "bonjour";
  char ch2[] = "bravo";

  printf ("avant %s\n", ch1);
  printf ("avant %s\n", ch2);
  suppr (ch1, ch2);
  printf ("dans ch1 et pas dans ch2: %s\n", ch1);
  return 0;
}

void suppr (char *ch1, char *ch2)
{
  int i, j, k;
  for (i = j = 0; ch1[i] != '\0'; ++i){
      for (k = 0; ch1[i] != ch2[k] && ch2[k] != '\0'; ++k)
        ;
      if (ch2[k] == '\0')
        ch1[j++] = ch1[i];
  }
  ch1[j] = '\0';
}