main参数（课上测试）

main.c

#include<stdio.h>
#include<stdlib.h>              
int sum(int N,int arr[]);        
int main(int argc,char **argv)  
{
int result;                     
int b[argc];                    
printf("%d\n",argc-1);
for (int i=0;i<argc;i++)
{
b[i]=atoi(argv[i]);            
result=sum(argc,ch);             
}
printf("the result is %d\n",result);
return 0;
}

sum.c

int sum(int N,int arr[]){
        int s=0;
        for(int i=0;i<N;i++)
                s+=arr[i];
return s;
}
 

运行截图