C语言中如何连接两个整数

连接两个整数的方法

c
#include 
int main() {
    int num1 = 123;
    int num2 = 456;
    int power = 10;
    int connectedNum;
    while (num2 > 0) {
        power *= 10;
        num2 /= 10;
    }
    connectedNum = num1 * power + num2;
    printf("连接后的整数为：%d\n", connectedNum);
    return 0;
}

c
#include 
#include 
#include 
int main() {
    int num1 = 123;
    int num2 = 456;
    char str1[20];
    char str2[20];
    char connectedStr[40];
    sprintf(str1, "%d", num1);
    sprintf(str2, "%d", num2);
    strcpy(connectedStr, str1);
    strcat(connectedStr, str2);
    int connectedNum = atoi(connectedStr);
    printf("连接后的整数为：%d\n", connectedNum);
    return 0;
}