DNA翻译C语言代码

#include <stdio.h> #include <math.h> int main() { char str[200], stu; int i, j, n; printf("请输入您要输入的字符串的长度n:\n"); scanf("%d",&n); stu = getchar(); printf("请输入DNA单链序列:\n"); for(i=0; i<n; i++) { scanf("%c",&str[i]); } printf ("\n"); printf ("输入的DNA单链为:-"); for(i=0; i<n; i++) { printf ("%c-",str[i]); } printf ("\n"); printf ("\n"); printf ("对应的DNA单链为:-"); for(i=0; i<n; i++) { if(str[i] == 'A') printf("T-"); else if(str[i] == 'T') printf("A-"); else if(str[i] == 'G') printf("C-"); else if(str[i] == 'C') printf("G-"); } printf ("\n"); printf ("\n"); printf ("转录生成的mRNA为:-"); for(i=0; i<n; i++) { if(str[i] == 'A') printf("U-"); else if(str[i] == 'T') printf("A-"); else if(str[i] == 'G') printf("C-"); else if(str[i] == 'C') printf("G-"); } printf ("\n"); for(i=0; i<n; i++) { if(str[i] == 'A') str[i] = 'U'; else if(str[i] == 'T') str[i] = 'A'; else if(str[i] == 'G') str[i] = 'C'; else if(str[i] == 'C') str[i] = 'G'; } printf ("\n"); printf ("翻译合成的蛋白质的氨基酸序列为:\n"); i = 0, j = n; do { if((str[0] == 'A' || str[0] == 'G') && str[1] == 'U' && str[2] == 'G') { j = i; break; } else ++i; }while(j != n); if(j == n) { printf("没有起始密码子！\n"); return 0; } for(; j < n; j += 3) { if((str[j] == 'U' && str[j + 1] == 'U' && str[j + 2] == 'U') || (str[j] == 'U' && str[j + 1] == 'U' && str[j + 2] == 'C')) printf("-苯丙氨酸"); else if((str[j] == 'U' && str[j + 1] == 'U' && str[j + 2] == 'A') || (str[j] == 'U' && str[j + 1] == 'U' && str[j + 2] == 'G') || (str[j] == 'C' && str[j + 1] == 'U')) printf("-亮氨酸"); else if((str[j] == 'U' && str[j + 1] == 'C') || (str[j] == 'A' && str[j + 1] == 'G' && str[j + 2] =='U') || (str[j] == 'A' && str[j + 1] == 'G' && str[j + 2] =='C')) printf("-丝氨酸"); else if((str[j] == 'U' && str[j + 1] == 'A' && str[j + 2] == 'U') || (str[j] == 'U' && str[j + 1] == 'A' && str[j + 2] == 'C')) printf("-骆氨酸"); else if((str[j] == 'U' && str[j + 1] == 'G' && str[j + 2] == 'U') || (str[j] == 'U' && str[j + 1] == 'G' && str[j + 2] == 'C')) printf("-半胱氨酸"); else if(str[j] == 'U' && str[j + 1] == 'G' && str[j + 2] == 'G') printf("-色氨酸"); else if((str[j] == 'C' && str[j + 1] == 'A' && str[j + 2] == 'A') || (str[j] == 'C' && str[j + 1] == 'A' && str[j + 2] == 'G')) printf("-谷氨酰胺"); else if((str[j] == 'C' && str[j + 1] == 'A' && str[j + 2] == 'U') || (str[j] == 'C' && str[j + 1] == 'A' && str[j + 2] == 'C')) printf("-组氨酸"); else if(str[j] == 'C' && str[j + 1] == 'C') printf("-脯氨酸"); else if(str[j] == 'A' && str[j + 1] == 'U' && str[j + 2] == 'G') printf("-甲硫氨酸"); else if((str[j] == 'A' && str[j + 1] == 'U' && str[j + 2] == 'U') || (str[j] == 'A' && str[j + 1] == 'U' && str[j + 2] == 'C') || (str[j] == 'A' && str[j + 1] == 'U' && str[j + 2] == 'A')) printf("-异亮氨酸"); else if((str[j] == 'A' && str[j + 1] == 'G' && str[j + 2] == 'A') || (str[j] == 'A' && str[j + 1] == 'G' && str[j + 2] == 'G') || (str[j] == 'C' && str[j + 1] == 'G')) printf("-精氨酸"); else if(str[j] == 'A' && str[j + 1] == 'C') printf("-苏氨酸"); else if((str[j] == 'A' && str[j + 1] == 'A' && str[j + 2] == 'U') || (str[j] == 'A' && str[j + 1] == 'A' && str[j + 2] == 'C')) printf("-天冬氨酸"); else if((str[j] == 'A' && str[j + 1] == 'A' && str[j + 2] == 'A') || (str[j] == 'A' && str[j + 1] == 'A' && str[j + 2] == 'G')) printf("-赖氨酸"); else if(str[j] == 'G' && str[j + 1] == 'U') printf("-缬氨酸"); else if(str[j] == 'G' && str[j + 1] == 'C') printf("-丙氨酸"); else if((str[j] == 'G' && str[j + 1] == 'A' && str[j + 2] == 'U') || (str[j] == 'G' && str[j + 1] == 'A' && str[j + 2] == 'C')) printf("-天冬氨酸"); else if((str[j] == 'G' && str[j + 1] == 'A' && str[j + 2] == 'A') || (str[j] == 'G' && str[j + 1] == 'A' && str[j + 2] == 'G')) printf("-谷氨酸"); else if(str[j] == 'G' && str[j + 1] == 'G') printf("-甘氨酸"); else if((str[j] == 'U' && str[j + 1] == 'A' && str[j + 2] == 'A') || (str[j] == 'U' && str[j + 1] == 'A' && str[j + 2] == 'G') || (str[j] == 'U' && str[j + 1] == 'G' && str[j + 2] == 'A')) printf("-终止密码"); } printf ("\n"); return 0; }