c语言10个经典小程序

Hello World

#include <stdio.h>int main() {printf("Hello, World!\n");return 0;}

计算两数之和

#include <stdio.h>int main() {int num1 = 5, num2 = 10;int sum = num1 + num2;printf("The sum of %d and %d is %d\n", num1, num2, sum);return 0;}

判断奇偶数

#include <stdio.h>int main() {int num = 6;if(num % 2 == 0) {printf("%d is an even number\n", num);} else {printf("%d is an odd number\n", num);}return 0;}

找出最大数

#include <stdio.h>int main() {int num1 = 10, num2 = 20, num3 = 15;int max;max = (num1 > num2) ? ((num1 > num3) ? num1 : num3) : ((num2 > num3) ? num2 : num3);printf("The largest number is %d\n", max);return 0;}

计算阶乘

#include <stdio.h>int main() {int num = 5;int factorial = 1;for(int i = 1; i <= num; i++) {factorial *= i;}printf("Factorial of %d is %d\n", num, factorial);return 0;}

判断素数

#include <stdio.h>int main() {int num = 7;int isPrime = 1;for(int i = 2; i <= num / 2; i++) {if(num % i == 0) {isPrime = 0;break;}}if(isPrime) {printf("%d is a prime number\n", num);} else {printf("%d is not a prime number\n", num);}return 0;}

反转数组

#include <stdio.h>int main() {int arr[] = {1, 2, 3, 4, 5};int n = sizeof(arr) / sizeof(arr[0]);printf("Original array: ");for(int i = 0; i < n; i++) {printf("%d ", arr[i]);}printf("\nReversed array: ");for(int i = n-1; i >= 0; i--) {printf("%d ", arr[i]);}return 0;}

斐波那契数列

#include <stdio.h>int main() {int n = 10;int first = 0, second = 1, next;for(int i = 0; i < n; i++) {if(i <= 1) {next = i;} else {next = first + second;first = second;second = next;}printf("%d ", next);}return 0;}

冒泡排序

#include <stdio.h>void bubbleSort(int arr[], int n) {for(int i = 0; i < n-1; i++) {for(int j = 0; j < n-i-1; j++) {if(arr[j] > arr[j+1]) {int temp = arr[j];arr[j] = arr[j+1];arr[j+1] = temp;}}}}int main() {int arr[] = {64, 34, 25, 12, 22, 11, 90};int n = sizeof(arr) / sizeof(arr[0]);bubbleSort(arr, n);printf("Sorted array: ");for(int i = 0; i < n; i++) {printf("%d ", arr[i]);}return 0;}

矩阵乘法

#include <stdio.h>int main() {int mat1[2][2] = {{1, 2}, {3, 4}};int mat2[2][2] = {{5, 6}, {7, 8}};int res[2][2];for(int i = 0; i <

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