将C字符串转换为Pascal样式的字符串

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char* convertToPascalString(const char* cString) {
    size_t cStringLength = strlen(cString);
    size_t pascalStringLength = cStringLength + 1;
    
    char* pascalString = (char*)malloc(pascalStringLength);
    if (pascalString == NULL) {
        printf("Memory allocation failed.\n");
        return NULL;
    }
    
    pascalString[0] = (char)cStringLength;
    memcpy(pascalString + 1, cString, cStringLength);
    
    return pascalString;
}

int main() {
    const char* cString = "Hello, World!";
    char* pascalString = convertToPascalString(cString);
    
    if (pascalString != NULL) {
        printf("Pascal String: %s\n", pascalString);
        free(pascalString);
    }
    
    return 0;
}