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  1. #include <stdarg.h>
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. #include <string.h>
  5.  
  6. void print(char const* string, int count, ...)
  7. {
  8.     struct data
  9.     {
  10.         char name[100];
  11.         int value;
  12.     };
  13.  
  14.     int totalArgs = count;
  15.     count*=2;
  16.  
  17.     va_list args;
  18.     va_start(args, count);
  19.  
  20.     struct data * parameters = (struct data*)malloc(totalArgs*sizeof(struct data));
  21.     for( int i=0; i<totalArgs; i++)
  22.     {
  23.         strcpy(parameters[i].name, va_arg(args, char*));
  24.         parameters[i].value = va_arg(args, int);
  25.     }
  26.  
  27.     va_end(args);
  28.  
  29.     for( int i=0; string[i]!='\0'; ++i )
  30.     {
  31.         if( string[i] == '{' )
  32.         {
  33.             int replaced = 0;
  34.             int j;
  35.             for( j=i+1; string[j]!='}'; ++j );
  36.  
  37.             for( int dataIndex=0; dataIndex<totalArgs; ++dataIndex )
  38.             {
  39.                 if( memcmp(string+i+1, parameters[dataIndex].name, j-i-1) == 0 )
  40.                 {
  41.                     printf("%d", parameters[dataIndex].value);
  42.                     i=j;
  43.                     replaced = 1;
  44.                     break;
  45.                 }
  46.             }
  47.  
  48.             if( !replaced )
  49.             {
  50.                 while(i<=j)
  51.                 {
  52.                     putchar(string[i++]);
  53.                 }
  54.                 i--;
  55.             }
  56.         }
  57.         else
  58.         {
  59.             putchar(string[i]);
  60.         }
  61.     }
  62.  
  63.     free(parameters);
  64. }
  65.  
  66. int main()
  67. {
  68.     int value = 123;
  69.     print("X={X} value={value} other={other}", 2, "X", 44, "value", value);
  70. }
Success #stdin #stdout 0s 4752KB
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Standard input is empty
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X=44 value=123 other={other}
https://ideone.com/zMFdom
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

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