三级上机题100道.docVIP

1.#include?stdio.hint?a[300],?b[300],?cnt=0?;void?readDat();void?writeDat();jsValue(){??int?i,?j,?qw,?bw,?sw,?gw,?tmp?;??for(i?=?0?;?i??300?;?i++)?{????qw?=?a[i]?/?1000?;????bw?=?(a[i]?-?qw?*?1000)?/?100?;????sw?=?(a[i]?-?qw?*?1000?-?bw?*?100)?/?10?;????gw?=?a[i]?%?10?;????if(qw?+?bw?-?sw?-?gw?==?0)?b[cnt++]?=?a[i]?;??}??for(i?=?0?;?i??cnt?;?i++)?{????for(j?=?i?+?1?;?j??cnt?;?j++)?{??????if(b[i]??b[j])?{????????tmp?=?b[j]?;????????b[j]?=?b[i]?;????????b[i]?=?tmp?;??????}????}??}}main(){??int?i?;??readDat()?;??jsValue()?;??writeDat()?;??printf(cnt=%d\n,?cnt)?;??for(i?=?0?;?i??cnt?;?i++)?printf(b[%d]=%d\n,?i,?b[i])?;}void?readDat(){??FILE?*fp?;??int?i?;??fp?=?fopen(C:\\WEXAM\\in.dat,r)?;??for(i?=?0?;?i??300?;?i++)?fscanf(fp,?%d,,?a[i])?;??fclose(fp)?;}void?writeDat(){??FILE?*fp?;??int?i?;??fp?=?fopen(C:\\WEXAM\\out.dat,w)?;??fprintf(fp,?%d\n,?cnt)?;??for(i?=?0?;?i??cnt?;?i++)?fprintf(fp,?%d\n,?b[i])?;??fclose(fp)?;} 2 #include?stdio.hint?cnt,?sum;void?writeDAT();int?isPrime(int?num){??int?i?;??for(i?=?2?;?i?=?num?/?2?;?i++)????if(num?%?i?==?0)?return?0?;??return?1?;}void?countValue(){??int?i,?j?=?-1?;??for(i?=?800?;?i??500?;?i--)?{????if(isPrime(i))?{??????cnt++;??????j?*=?-1?;??????sum?+=?j?*?i?;????}??}}void?main(){??cnt?=?sum?=?0?;??countValue()?;??printf(素数的个数=%d\n,?cnt)?;??printf(按要求计算的值=%d\n,?sum)?;??writeDAT()?;}void?writeDAT(){??FILE?*fp?;??fp?=?fopen(C:\\WEXAM\\OUT.DAT,?w)?;??fprintf(fp,?%d\n%d\n,?cnt,?sum)?;3?? #include?stdio.hint?cnt,?sum?;void?writeDAT()?;void?countValue(){??int?s,?i,?x,?n,?e,?six,?nine?;??for(s?=?1?;?s??10?;?s++)????for(i?=?0?;?i??10?;?i++)??????for(x?=?0?;?x??10?;?x++)for(n?=?1?;?n??10?;?n++)??for(e?=?0?;?e??10?;?e++)?{????six?=?s?*?100?+?i?*?10?+?x?;????nine?=?n?*?1000?+?i?*?100?+?n?*?10?+?e?;????if((3?*?six)?==?(2?*?nine))?{??????cnt++?;?sum+=?six?+?nine?;??????printf(six=%d,nine=%d\n,?six,?nine)?