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1、使用strcat进行字符串拼接

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

int main() {
    char *firstName = "Theo";
    char *lastName = "Tsao";
    char *name = (char *) malloc(strlen(firstName) + strlen(lastName));
    strcpy(name, firstName);
    strcat(name, lastName);
    printf("%s
", name);
    return 0;
}

2、使用sprintf进行字符串拼接

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

int main() {
    char *firstName = "Theo";
    char *lastName = "Tsao";
    char *name = (char *) malloc(strlen(firstName) + strlen(lastName));
    sprintf(name, "%s%s", firstName, lastName);
    printf("%s
", name);
    return 0;
}