i want to define a macro where i can print a variable's name and value

#define DBG(x) printf("DEBUG >> "#x" == %d\n",(x))
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See Quoting macro arguments

Example:

#include <stdio.h>
#define DBG(x) printf("DEBUG >> "#x" == %d\n",(x))

int main() {
    int u4_heap_mem_size = 8890;

    DBG(u4_heap_mem_size+1);    // prints  DEBUG >> u4_heap_mem_size+1
+ == 8891
    
    return 0;
}
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