8.文件复制#include main(){ FILE *in, *out; char ch,infile[10],outfile[10]; scanf("%s",infile); scanf("%s",outfile); if ((in = ______ )== NULL) { printf("Cannot open infile.\n"); exit(0); } if ((out = fopen(outfile, "w"))== NULL) { printf("Cannot open outfile.\n"); exit(0); } while (!feof(in)) fputc(fgetc(in), out); fclose(in); ______ }
7.求二维数组中最大元素值及下标#include main(){ int a[3][4]={{1,2,3,4},{9,8,7,6},{-10,10,-5,2}}; int i,j,row=0,colum=0,max; max=a[0][0]; for(i=0;i<=2;i++) for(j=0;j<=3;j++) if(______ ) { max=a[i][j]; row=i; ______ _colum=j;_ } printf("max=%d,row=%d, colum=%d\n",max,row,colum);}