44 lines
798 B
C
44 lines
798 B
C
#include <stdio.h>
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#include <stdlib.h>
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int x_strlen(char* str){
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char* ptr = str;
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while(*ptr != '\0'){
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ptr++;
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}
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return ptr - str;
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}
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void x_strcpy(char* dest, char* src, const int size_dest){
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char* dest_ptr = dest;
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char* src_ptr = src;
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int i = 0;
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while(*src_ptr != '\0'){
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if (i >= size_dest){
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fprintf(stderr, "Error: x_strcpy\nSource string exeeds destination memory\n");
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exit(1);
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}
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*dest_ptr = *src_ptr;
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dest_ptr++;
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src_ptr++;
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i++;
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}
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}
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char* x_strconcat(char* str1, char* str2){
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char* new_string;
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int len1 = x_strlen(str1);
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int len2 = x_strlen(str2);
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int new_length = len1 + len2;
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new_string = malloc( sizeof(*new_string) * new_length );
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x_strcpy(new_string, str1, new_length);
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x_strcpy(&new_string[len1], str2, new_length - len1);
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return new_string;
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}
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