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created by

anonymous

1 minute ago

​x
 
#include <stdio.h>
​
int main(void) {
    char name[20];
    printf("\nEnter your Name\n-> ");
    scanf("%s", name);
​
    char date[10];
    printf("\nEnter today's Date in DD/MM/YY format. For example - 18-02-21\n-> ");
    scanf("%s", date);
​
    //Storing the filename inside the array with the same name.
    char filename[30];
    sprintf(filename, "%s_%s.txt",name,date);
    printf("%s", filename);
}
​

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$ gcc prog.c -Wall -Wextra -std=gnu11

Stdin

​
 
MikeCAT21-02-03​

Run (or Ctrl+Enter)

#permlink

Code

Start

prog.c: In function 'main':
prog.c:14:29: warning: '.txt' directive writing 4 bytes into a region of size between 1 and 29 [-Wformat-overflow=]
   14 |     sprintf(filename, "%s_%s.txt",name,date);
      |                             ^~~~
prog.c:14:5: note: 'sprintf' output between 6 and 34 bytes into a destination of size 30
   14 |     sprintf(filename, "%s_%s.txt",name,date);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Enter your Name
-> 
Enter today's Date in DD/MM/YY format. For example - 18-02-21
-> MikeCAT_21-02-03.txt

Finish

No Wrap