Question

#include "stdio.h"
#include "conio.h"
int main()
{
    char str1[]=asc(20);
    char str2[]="SpApp|";
    strcat(str1,str2);  
    printf(str1);
    getch();  
}

I want to write a program which convert int to ASCII code first and then it concatenate with SpApp| and prints the values in c program.

Although printf("%c",20); also gives ASCII conversion, but I’m not getting how to save it in another char str1[] and then concatenate it with char str2[];

Answer 1

The asc function returns a single character, not a string, so the array str1 will not contain the terminating special character '\0'.

You have to initialize str1 properly:

char str1[] = { asc(20), '\0' };

The second problem is that the destination string str2 is not big enough to contain both the string you start with and the extra string you want to add to it. You need to make it big enough to contain both strings:

char str2[16] = "...";