c语言编程:若找到则输出所在的下标值,否则输出-1答:include<stdio.h> int main(){ int i,n,a[10]={1,2,3,4,5,6,7,8,9,10};scanf("%d",&n);for(i=0;i<10;i++)if(n==a[i])break;if(i==10)printf("-1");else printf("%d",i);return 0;} include<stdio.h> int main(){ int i,j,n,a[3][4]={{1,2,3,4}...