שפת C/מחרוזות/תרגילים

#include <stdio.h>
 
int main()
{
  char name[10];
 
  printf("Please enter your name: ");
  scanf("%s",&name);
  printf("Hello, %s!",name);
 
  return 0;
}

#include <stdio.h>
#include <string.h>
 
int main()
{
  char str[3][15];
  char outputString[50];
  int i;
 
  for (i=0; i<3; ++i)
  {
    printf("Please insert string number %d\n",i+1);
    scanf("%s",str[i]);
  }
 
  strcpy(outputString,str[0]);
  strcat(outputString,str[1]);
  strcat(outputString,str[2]);
 
  printf("%s\n",outputString);
 
  return 0;
}

#include <stdio.h>
#include <string.h>
 
int main()
{
  char original[15];
  char reversed[15];
  int i, end_index;
 
  printf("Please insert a string to reverse\n");
  scanf("%s",original);
 
  end_index = strlen(original) - 1;
  for(i = end_index; i >= 0; --i)
	reversed[end_index-i]=original[i];
 
  reversed[end_index + 1] = 0;
 
  printf("%s\n",reversed);
 
  return 0;
}

#include <stdio.h>
#include <string.h>
 
int main()
{
  char str[15];
  char temp;
  int i,end_index;
 
  printf("Please insert a string to reverse\n");
  scanf("%s",str);
 
  end_index = strlen(str) - 1;
 
  for (i=0; i <= end_index/2; ++i)
  {
    temp=str[i];
	str[i]=str[end_index-i];
	str[end_index-i]=temp;
  }
 
  printf("%s\n",str);
 
  return 0;
}

#include <stdio.h>
#include <string.h>
 
int main()
{
  char str[15];
  int i, pos=0;
 
  printf("Please insert a string from which to remove spaces.\n");
  gets(str);/* remember - never use gets in real life! */
 
  for (i=0; i<strlen(str); ++i)
    if (str[i] != ' ')
      str[pos++]=str[i];
 
  str[pos]='\0';
 
  printf("%s\n",str);
 
  return 0;
}

unsigned int strlen_without_h(const char str[])
{
  unsigned int i;
  unsigned int len_without_h = 0;
 
  for(i = 0; str[i] != 0; ++i)
    if(str[i] != 'h')
      ++len_without_h;
 
  return len_without_h;
}

void strcpy_without_h(char dest[], const char src[])
{
  unsigned int src_i, dest_i;
 
  for(src_i = 0, dest_i = 0; src[src_i] != 0; ++src_i)		
    if(src[src_i] != 'h')
      dest[dest_i++] = src[src_i];
 
  dest[dest_i++] = 0;  
}