#include <stdio.h>
int main ( void ){
	static const char filename[] = "file.txt";
	FILE *file = fopen ( filename, "r" );
 
	if ( file != NULL )	{
		char line [ 128 ]; /* maximum line size */
		while ( fgets ( line, sizeof line, file ) != NULL ) { /* read a line */
			fputs ( line, stdout ); /* write the line */
		}
		fclose ( file );
	} else {
		perror ( filename ); /* why didn't the file open? */
	}
	return 0;
}

#include <stdio.h>
#include <stdlib.h>
 
int main( void ){
 
   char   psBuffer[128];
   FILE   *pPipe;
 
   if( (pPipe = _popen( "ping 10.317.112.201", "rt" )) == NULL )
      exit( 1 );
 
   while(fgets(psBuffer, 128, pPipe)) {
      if(strstr(psBuffer,"TTL")) printf("Ima ping\n");
      printf(psBuffer);
   }
 
 
   /* Close pipe and print return value of pPipe. */
   if (feof( pPipe)) {
     printf( "\nProcess returned %d\n", _pclose( pPipe ) );
   }
   else {
     printf( "Error: Failed to read the pipe to the end.\n");
   }
}

#include <stdio.h>
#include <stdlib.h>
 
 
int main( int argc, char *argv[] ){
  FILE *fp;
  int status;
  char path[1035];
 
  /* Open the command for reading. */
  fp = popen("dir ..", "r"); // Dir one directory Up
  if (fp == NULL) {
    printf("Failed to run command\n" );
    exit;
  }
 
  /* Read the output a line at a time - output it. */
  while (fgets(path, sizeof(path)-1, fp) != NULL) {
    if(strstr(path,"Edit")){    // check file/dir name contains 'Edit'
        printf("%s", path);
    }
  }
 
  /* close */
  pclose(fp);
 
  return 0;
}

#include <stdio.h>
int main(){
 char words[][18] = {"edno", "dve", "tri", "chetiri", "pet"};
 int i;
 
 for (i = 0; i < 5; i++){
     char *words_ptr = *(words + i);
     printf("words_ptr + %d = %s \n", i, words_ptr);
 }
 return 0;
}

#include <stdio.h>
char words[][18] = {"edno", "dve", "tri", "chetiri", "pet"};
char *ptr;
 
int main(){
 int i;
 
 for (i = 0; i < 5; i++) {
     printf("--%s--\n",words + i);
     ptr = *(words + i);
     printf("ptr + %d = %s \n", i, ptr);
 }
 return 0;
}

#include <stdio.h>
char *words[] = {"edno", "dve", "tri", "chetiri", "pet"};
 
int main(){
 int i;
 
 for (i = 0; i < 5; i++) {
     printf("ptr + %d = %s \n", i, *(words + i));
 }
 return 0;
}

#include <stdio.h>
#include <stdlib.h> // ANSI C exit() prototype
 
#define MAX 40
 
int main(){
	FILE * fp;
	char words[MAX];
 
	if ((fp = fopen("in.list", "r")) == NULL){
		printf("Can't open file\n");
		exit(1);
	}
 
	while (fscanf(fp,"%s",words) == 1){
		puts(words);
	}
 
	if (fclose(fp) != 0) printf("Error in closing file \n");
}