diff --git a/default.config b/default.config
index 16d1c6b..37c5883 100644
--- a/default.config
+++ b/default.config
@@ -1,5 +1,5 @@
 #!/bin/bash
-CONFIG_VERSION=2
+CONFIG_VERSION=3
 CBUILD_VERSION=2
 
 PROJECT=kerep
@@ -7,7 +7,7 @@ CMP_C=gcc
 CMP_CPP=g++
 STD_C=c11
 STD_CPP=c++17
-WARN_C="-Wall -Wno-discarded-qualifiers"
+WARN_C="-Wall -Wno-discarded-qualifiers -Wno-int-conversion"
 WARN_CPP="-Wall"
 SRC_C="$(    find src -name '*.c')"
 SRC_CPP="$(  find src -name '*.cpp')"
diff --git a/src/base/cptr.c b/src/base/cptr.c
index cba9814..53872cd 100644
--- a/src/base/cptr.c
+++ b/src/base/cptr.c
@@ -52,7 +52,7 @@ void memcopy(void* from, void* to, uint32 size){
     if(from==NULL || to==NULL)
         throw(ERR_NULLPTR);
     for(uint32 i=0; i<size; i++)
-        ((char*)to)[i]=*(char*)from+i;
+        ((char*)to)[i]=((char*)from)[i];
 }
 
 char* __cptr_concat(uint16 n, ...){
diff --git a/src/base/type_system/base_toString.c b/src/base/type_system/base_toString.c
index a4be0ca..80bdc38 100644
--- a/src/base/type_system/base_toString.c
+++ b/src/base/type_system/base_toString.c
@@ -9,6 +9,10 @@ char* __toString_char(void* c, uint32 fmt) {
     return cc;
 }
 
+char* __toString_charPtr(void* c, uint32 fmt){
+    return cptr_copy(*(char**)c);
+}
+
 char* __toString_bool(void* c, uint32 fmt) {
     static const char _strbool[4][6]={ "false", "true\0", "False", "True\0" };
     uint8 strind=*(bool*)c==1 + kprint_format_uppercase(fmt)*2;
@@ -51,24 +55,25 @@ char* toString_uint(uint64 n, bool withPostfix, bool uppercase){
 }
 
 char* toString_float(float64 n, bool withPostfix, bool uppercase){
-    int64 d=n;
-    float64 r=n-d;
-    char* strint=toString_int(d);
-    char strfract[32];
-    uint8 i=0;
-    strfract[i++]='.';
-    while(r!=0){
-        r*=10.0;
-        char fc=r;
-        strfract[i++]=fc;
-        r-=fc;
-    }
-    if(withPostfix)
-        strfract[i++]= uppercase ? 'F' : 'f';
-    strfract[i]=0;
-    char* str=cptr_concat(strint, strfract);
-    free(strint);
-    return str;
+    // int64 d=n;
+    // float64 r=n-d;
+    // char* strint=toString_int(d);
+    // char strfract[32];
+    // uint8 i=0;
+    // strfract[i++]='.';
+    // while(r!=0){
+    //     r*=10.0;
+    //     char fc=r;
+    //     strfract[i++]=fc;
+    //     r-=fc;
+    // }
+    // if(withPostfix)
+    //     strfract[i++]= uppercase ? 'F' : 'f';
+    // strfract[i]=0;
+    // char* str==cptr_concat(strint, strfract);
+    // free(strint);
+    // return str;
+    return cptr_copy("<float>");
 }
 
 char* toString_bin(char* bytes, uint32 size, bool withPrefix){
diff --git a/src/base/type_system/base_toString.h b/src/base/type_system/base_toString.h
index a0ed7ac..5700302 100644
--- a/src/base/type_system/base_toString.h
+++ b/src/base/type_system/base_toString.h
@@ -8,6 +8,7 @@ extern "C" {
 
 // functions for base types
 char* __toString_char(void* c, uint32 fmt);
+char* __toString_charPtr(void* c, uint32 fmt);
 char* __toString_bool(void* c, uint32 fmt);
 
 char* toString_int(int64 n);
diff --git a/src/base/type_system/init.c b/src/base/type_system/init.c
index 0f1b18b..91f592e 100644
--- a/src/base/type_system/init.c
+++ b/src/base/type_system/init.c
@@ -22,18 +22,18 @@ void ktDescriptors_initKerepTypes(){
     kt_register(int64,   ktId_Int64,   NULL, __toString_int64);
     kt_register(uint64,  ktId_UInt64,  NULL, __toString_uint64);
     // base type pointers
-    kt_register(char*,    ktId_CharPtr,    NULL, __toString_char);
-    kt_register(bool*,    ktId_BoolPtr,    NULL, __toString_bool);
-    kt_register(float32*, ktId_Float32Ptr, NULL, __toString_float32);
-    kt_register(float64*, ktId_Float64Ptr, NULL, __toString_float64);
-    kt_register(int8*,    ktId_Int8Ptr,    NULL, __toString_int8);
-    kt_register(uint8*,   ktId_UInt8Ptr,   NULL, __toString_uint8);
-    kt_register(int16*,   ktId_Int16Ptr,   NULL, __toString_int16);
-    kt_register(uint16*,  ktId_UInt16Ptr,  NULL, __toString_uint16);
-    kt_register(int32*,   ktId_Int32Ptr,   NULL, __toString_int32);
-    kt_register(uint32*,  ktId_UInt32Ptr,  NULL, __toString_uint32);
-    kt_register(int64*,   ktId_Int64Ptr,   NULL, __toString_int64);
-    kt_register(uint64*,  ktId_UInt64Ptr,  NULL, __toString_uint64);
+    kt_register(char*,    ktId_CharPtr,    NULL, __toString_charPtr);
+    kt_register(bool*,    ktId_BoolPtr,    NULL, NULL);
+    kt_register(float32*, ktId_Float32Ptr, NULL, NULL);
+    kt_register(float64*, ktId_Float64Ptr, NULL, NULL);
+    kt_register(int8*,    ktId_Int8Ptr,    NULL, NULL);
+    kt_register(uint8*,   ktId_UInt8Ptr,   NULL, NULL);
+    kt_register(int16*,   ktId_Int16Ptr,   NULL, NULL);
+    kt_register(uint16*,  ktId_UInt16Ptr,  NULL, NULL);
+    kt_register(int32*,   ktId_Int32Ptr,   NULL, NULL);
+    kt_register(uint32*,  ktId_UInt32Ptr,  NULL, NULL);
+    kt_register(int64*,   ktId_Int64Ptr,   NULL, NULL);
+    kt_register(uint64*,  ktId_UInt64Ptr,  NULL, NULL);
     
     // ktDescriptor
     kt_register(ktDescriptor,  ktId_ktDescriptor,  NULL, NULL);
diff --git a/src/base/type_system/kt_functions.c b/src/base/type_system/kt_functions.c
index 5d3d014..c3afe91 100644
--- a/src/base/type_system/kt_functions.c
+++ b/src/base/type_system/kt_functions.c
@@ -71,7 +71,7 @@ void __kt_register(char* name, int16 size, void (*freeMembers)(void*), char* (*t
 
 ktDescriptor ktDescriptor_get(ktId id){
     if(id>ktId_last) {
-        printf("\n%u\n",id);
+        printf("\ntype id: %u\n",id);
         throw("invalid type id");
     }
     return typeDescriptors[id];
diff --git a/src/kprint/kprint.c b/src/kprint/kprint.c
index 28de177..1f1ec21 100644
--- a/src/kprint/kprint.c
+++ b/src/kprint/kprint.c
@@ -23,7 +23,7 @@ ktId __typeFromFormat(kprint_format f){
     }
 }
 
-Maybe __next_toString(kprint_format f, void* object){
+Maybe __next_toString(kprint_format f, __kprint_value_union* object){
     // detecting type
     ktId typeId=__typeFromFormat(f);
     if(typeId==-1)
@@ -34,19 +34,22 @@ Maybe __next_toString(kprint_format f, void* object){
     return SUCCESS(UniHeap(ktId_CharPtr, typeDesc.toString(object, f)));
 }
 
-Maybe __ksprint(uint8 n, kprint_format* formats, void** objects){
+Maybe __ksprint(uint8 n, kprint_format* formats, __kprint_value_union* objects){
+    n/=2;
     StringBuilder* strb=StringBuilder_create();
     for(uint8 i=0; i<n; i++){
-        try(__next_toString(formats[i], objects[i]),mStr,;);
+        try(__next_toString(formats[i], &objects[i]),mStr,;);
         StringBuilder_append_cptr(strb, mStr.value.VoidPtr);
+        Unitype_free(mStr.value);
     }
     char* rezult=StringBuilder_build(strb).ptr;
     return SUCCESS(UniHeap(ktId_CharPtr, rezult));
 }
 
-Maybe __kfprint(FILE* file, uint8 n, kprint_format* formats, void** objects){
+Maybe __kfprint(FILE* file, uint8 n, kprint_format* formats, __kprint_value_union* objects){
+    n/=2;
     for(uint8 i=0; i<n; i++){
-        try(__next_toString(formats[i], objects[i]),maybeStr,;);
+        try(__next_toString(formats[i], &objects[i]),maybeStr,;);
         if(fputs(maybeStr.value.VoidPtr, file)==EOF)
             safethrow("can't write string to file", Unitype_free(maybeStr.value));
         Unitype_free(maybeStr.value);
@@ -55,11 +58,12 @@ Maybe __kfprint(FILE* file, uint8 n, kprint_format* formats, void** objects){
     return MaybeNull;
 }
 
-void __kprint(uint8 n, kprint_format* formats, void** objects){
+void __kprint(uint8 n, kprint_format* formats, __kprint_value_union* objects){
+    n/=2;
     for(uint8 i=0; i<n; i++){
         kprint_format fmt=formats[i];
         kprint_setColor(fmt);
-        tryLast(__next_toString(fmt, objects[i]),maybeStr);
+        tryLast(__next_toString(fmt, &objects[i]),maybeStr);
         if(fputs(maybeStr.value.VoidPtr, stdout)==EOF)\
             throw("can't write string to stdout");
             //, Unitype_free(maybeStr.value)
diff --git a/src/kprint/kprint.h b/src/kprint/kprint.h
index 68d1d2e..6e0587a 100644
--- a/src/kprint/kprint.h
+++ b/src/kprint/kprint.h
@@ -8,12 +8,20 @@ extern "C" {
 #include "kprint_colors.h"
 #include "kprint_format.h"
 
+typedef union {
+    int64 i64;
+    uint64 u64;
+    float64 f64;
+    void* ptr;
+} __kprint_value_union; 
+#define __kprintVU(value) (__kprint_value_union){ value }
+
 #define __kprint_argsToFormats8(\
     a0, a1, a2, a3, a4, a5, a6, a7,...)\
     ((int32[]){ a0,a2,a4,a6 })
 #define __kprint_argsToObjects8(\
     a0, a1, a2, a3, a4, a5, a6, a7,...)\
-    ((void*[]){ &a1,&a3,&a5,&a7 })
+    ((__kprint_value_union[]){ __kprintVU(a1),__kprintVU(a3),__kprintVU(a5),__kprintVU(a7) })
     
 #define __kprint_argsToFormats16(\
     a0, a1, a2, a3, a4, a5, a6, a7,\
@@ -22,7 +30,7 @@ extern "C" {
 #define __kprint_argsToObjects16(\
     a0, a1, a2, a3, a4, a5, a6, a7,\
     a8, a9, a10,a11,a12,a13,a14,a15,...)\
-    ((void*[]){ &a1,&a3,&a5,&a7,&a9,&a11,&a13,&a15 })
+    ((__kprint_value_union[]){ __kprintVU(a1),__kprintVU(a3),__kprintVU(a5),__kprintVU(a7),__kprintVU(a9),__kprintVU(a11),__kprintVU(a13),__kprintVU(a15) })
 
 #define __kprint_argsToFormats32(\
     a0, a1, a2, a3, a4, a5, a6, a7,\
@@ -35,26 +43,26 @@ extern "C" {
     a8, a9, a10,a11,a12,a13,a14,a15,\
     a16,a17,a18,a19,a20,a21,a22,a23,\
     a24,a25,a26,a27,a28,a29,a30,a31,...)\
-    ((void*[]){ &a1,&a3,&a5,&a7,&a9,&a11,&a13,&a15,&a17,&a19,&a21,&a23,&a25,&a27,&a29,&a31 })
+    ((__kprint_value_union[]){ __kprintVU(a1),__kprintVU(a3),__kprintVU(a5),__kprintVU(a7),__kprintVU(a9),__kprintVU(a11),__kprintVU(a13),__kprintVU(a15),__kprintVU(a17),__kprintVU(a19),__kprintVU(a21),__kprintVU(a23),__kprintVU(a25),__kprintVU(a27),__kprintVU(a29),__kprintVU(a31) })
 
 #define __32zeroes 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 
 #define __kprint_argsToArrs(COUNT,ARGS...)\
-    (COUNT<=8 ? __kprint_argsToFormats8(ARGS) :\
+    (kprint_format*)(COUNT<=8 ? __kprint_argsToFormats8(ARGS) :\
     COUNT<=16 ? __kprint_argsToFormats16(ARGS) :\
     __kprint_argsToFormats32(ARGS)),\
-    (COUNT<=8 ? __kprint_argsToObjects8(ARGS) :\
+    (__kprint_value_union*)(COUNT<=8 ? __kprint_argsToObjects8(ARGS) :\
     COUNT<=16 ? __kprint_argsToObjects16(ARGS) :\
     __kprint_argsToObjects32(ARGS))
 
 
-Maybe __ksprint(uint8 n, kprint_format* formats, void** objects);
+Maybe __ksprint(uint8 n, kprint_format* formats, __kprint_value_union* objects);
 #define ksprint(ARGS...) __ksprint(count_args(ARGS), __kprint_argsToArrs(count_args(ARGS),ARGS, __32zeroes))
 
-Maybe __kfprint(FILE* fd, uint8 n, kprint_format* formats, void** objects);
+Maybe __kfprint(FILE* fd, uint8 n, kprint_format* formats, __kprint_value_union* objects);
 #define kfprint(FD, ARGS...) __kfprint(FD, count_args(ARGS), __kprint_argsToArrs(count_args(ARGS),ARGS, __32zeroes))
 
-void __kprint(uint8 n, kprint_format* formats, void** objects);
+void __kprint(uint8 n, kprint_format* formats, __kprint_value_union* objects);
 #define kprint(ARGS...) __kprint(count_args(ARGS), __kprint_argsToArrs(count_args(ARGS),ARGS, __32zeroes))
 
 // can take (bgColor | fgColor) 
diff --git a/tests/main.cpp b/tests/main.cpp
index 99c7197..ae1beed 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -9,8 +9,8 @@ void test_all(){
     test_hash_functions();
     test_hashtable();
     test_dtsod();
-    test_kprint_colors();
     test_rng_algorithms();
+    test_kprint_colors();
     printf("\e[96m--------------------------------------\e[0m\n");
 }
 int main(){
@@ -20,8 +20,8 @@ int main(){
     ktDescriptors_endInit();
     printf("\e[97mkerep tests are starting!\n");
     // optime("test_all",1,test_all());
-    // test_kprint_colors();
     test_rng_algorithms();
+    test_kprint_colors();
     ktDescriptors_free();
     printf("\e[0m\n");
     return 0;
diff --git a/tests/test_kprint_colors.c b/tests/test_kprint_colors.c
index 487d8f3..86eedc8 100644
--- a/tests/test_kprint_colors.c
+++ b/tests/test_kprint_colors.c
@@ -45,4 +45,6 @@ void test_kprint_colors(){
     testColor(Cyan);
     testColor(White);
     kprint_setColor(kprint_bgBlack | kprint_fgGray);
+
+    kprint(kprint_fmtInt | kprint_fgCyan, 8888, kprint_fmtString | kprint_fgYellow, "  ooo  ", kprint_fmtFloat | kprint_bgDarkGreen | kprint_fgRed, 4.01, kprint_fmtString | kprint_fgWhite, "\ngg\n");
 }
\ No newline at end of file