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cs_lang:c [2011/07/12 10:47] – [Read a file] cedriccs_lang:c [2012/09/30 23:32] (current) – cedric
Line 15: Line 15:
 { {
     printf("Hello World");     printf("Hello World");
- 
- 
 } }
 </code> </code>
Line 29: Line 27:
 $ ./hello.out  $ ./hello.out 
 Hello World Hello World
 +</code>
 +
 +
 +===== Increment a number =====
 +<code c>
 +#include "stdio.h"
 +
 +char  line[100];
 +int   value;
 +
 +int main()
 +{
 +    printf("Enter a value:");
 +    fgets(line, sizeof(line), stdin);
 +    sscanf(line, "%d", &value);
 +
 +    printf("Inc: %d\n", value + 1);
 +
 +    return 0;
 +}
 +</code>
 +
 +<code bash>
 +$ gcc -Wall test1.c 
 +cedric@debian:~$ ./a.out 
 +Enter a value:41
 +Inc: 42
 +</code>
 +
 +==== Equivalent in python ====
 +<code python>
 +>>> def inc():
 +...     value = raw_input("Enter a value:")
 +...     print "Inc:", int(value)+1
 +... 
 +>>> inc()
 +Enter a value:41
 +Inc: 42
 </code> </code>
  
Line 40: Line 76:
  
 main() main()
- 
 { {
-   char line[80]; +   char line[1024];
    fr = fopen ("./file.txt", "rt");  /* open the file for reading */    fr = fopen ("./file.txt", "rt");  /* open the file for reading */
    /* "rt" means open the file for reading text */    /* "rt" means open the file for reading text */
Line 55: Line 89:
 </code> </code>
  
-===== Equivalent in python =====+==== Equivalent in python ====
 <code python> <code python>
 for line in open("./file.txt", "r"): for line in open("./file.txt", "r"):
     print line     print line
 </code> </code>
cs_lang/c.1310460462.txt.gz · Last modified: 2011/07/12 10:47 by cedric