c语言如何把输入的字母转换成数字运算然后输出？ 字母转换为数字的c语言
\u600e\u6837\u7528C\u8bed\u8a00\u7a0b\u5e8f\u628a\u5b57\u6bcd\u8f6c\u5316\u4e3a\u6570\u5b57#include #include int main(){ char a=0,b; printf("===========start============\n"); printf("\u5b57\u6bcd\u8f6c\u6210ASCII\uff0c\u8f93\u51650\u9000\u51fa\u7a0b\u5e8f\n"); do { printf("\u8f93\u5165\u4e00\u4e2a\u5b57\u6bcd:"); scanf("%s",&a); if(a!='0') printf("\u5bf9\u5e94ASCII\u7801\u503c:%d\n",a); else printf("\u9000\u51fa\u7a0b\u5e8f\n",a); }while(a!='0'); printf("===========end==============\n"); return 0;}
\u4e25\u8c28\u6765\u8bf4\u662f\u5b57\u7b26\u5b57\u6bcd\uff0c\u7531\u4e8e\u5728c\u8bed\u8a00\u4e2d\uff0c\u5b57\u7b26\u662f\u53ef\u4ee5\u548c\u6570\u503c\u8fdb\u884c\u8fd0\u7b97\u7684\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u8f6c\u6362\uff0c\u5b57\u7b26\u5b57\u6bcd\u5c31\u53ef\u4ee5\u4f5c\u4e3a\u6570\u5b57\uff08ascll\u503c\uff09\u4f8b\uff1a int c='A'; \u8fd9\u91ccc\u5c31\u662f65
用函数可以用atoi，要自己算的话可以把字母 - '0'或字母 - 48，如：'3' - '0'或'3' - 48单个字母的话：
int a;
char c;
a=c-'0'; //c的ascll码减0的ascll码
绛旓細1銆#include<iostream> 2銆乽sing namespace std;3銆乮nt main()4銆亄 5銆乧har c;6銆乧in>>c;7銆乧out<<(int)c<<endl;8銆乺eturn 0;9銆亇 ASCII鐮佲榓鈥欎负97鈥楢鈥欎负65
绛旓細C璇█涓紝鍙互浣跨敤atoi鍑芥暟灏嗗瓧绗︿覆杞崲涓烘暟瀛锛屽atoi("123")鍙互寰楀埌鏁板瓧123銆俛toi (琛ㄧず ascii to integer)鏄妸瀛楃涓茶浆鎹㈡垚鏁村瀷鏁扮殑涓涓嚱鏁帮紝搴旂敤鍦ㄨ绠楁満绋嬪簭鍜屽姙鍏蒋浠朵腑銆俰nt atoi(const char *nptr) 鍑芥暟浼氭壂鎻忓弬鏁 nptr瀛楃涓诧紝浼氳烦杩囧墠闈㈢殑绌虹櫧瀛楃锛堜緥濡傜┖鏍硷紝tab缂╄繘锛夌瓑銆傚鏋 nptr涓嶈兘...
绛旓細锛1锛変娇鐢ㄥ父鐢ㄦ爣鍑嗗嚱鏁板簱stdlib褰撲腑鐨勫瓧绗︿覆杞崲鍑芥暟锛屽彲浠ユ妸鍚勭绫诲瀷鐨勫瓧绗︿覆杞崲涓虹浉搴旂被鍨嬬殑鏁板瓧銆傦紙2锛変娇鐢ㄨ緭鍏ヨ緭鍑烘爣鍑嗗嚱鏁板簱stdio褰撲腑鐨剆scanf鍑芥暟銆傜敤鏍囧噯搴撲腑鐨剆scanf鍑芥暟锛堝叾涓牸寮忔帶鍒跺瓧绗︾殑浣跨敤鏂规硶鍜宻canf涓鑷达紝%d璇诲崄杩涘埗鏁存暟锛%x璇16杩涘埗鏁存暟锛夈備緥濡傦細char s[] = {"92283976 73b1c080 1e4...
绛旓細C璇█鏈塧toi銆乤tol銆乤tof绛夊簱鍑芥暟锛屽彲鍒嗗埆鎶夾SCII缂栫爜鐨勫瓧绗︿覆杞寲涓篿nt銆乴ong銆乫loat绫诲瀷鐨勬暟瀛銆俓x0d\x0a澶存枃浠讹細stdlib.h\x0d\x0a鍑芥暟鍘熷瀷锛歩nt atoi(const char* nptr);\x0d\x0a锛堝彟澶栦袱涓被浼硷級\x0d\x0a\x0d\x0a涓句釜渚嬪瓙锛歕x0d\x0achar *str="123";\x0d\x0aint num...
绛旓細鐢c璇█ASCII鐮鐨勬暟瀛楄浆瀛楁瘝锛瀛楁瘝杞鏁板瓧鐨勬柟娉曞涓嬶細include <stdio.h> int main(){ //杈撳叆瀛楁瘝锛屽啀杈撳嚭瀛楁瘝鐨勬柟娉 printf("杈撳叆瀛楁瘝锛屽啀杈撳嚭瀛楁瘝鐨勬柟娉昞n"); char c1,c2; scanf("%c,%c",&c1,&c2); printf("c1 = %c,c2 = %c",c1,c2); //杈撳叆鏁板瓧锛杞崲...
绛旓細1銆佹柊寤轰竴涓伐绋嬪拰.c鏂囦欢 锛杈撳叆澶存枃浠跺拰涓诲嚱鏁般2銆佸０鏄庤璋冪敤鐨勫嚱鏁帮紝瀹氫箟鍙橀噺绫诲瀷銆3銆佽緭鍏ユ暣鏁般4銆佺敤涓涓猧f璇彞鍘诲垽鏂暣鏁版槸鍚︿负璐熸暟锛岃嫢涓鸿礋鏁板垯鐢╬utchar鍑芥暟杈撳嚭涓涓礋鍙枫5銆佽皟鐢ㄤ竴涓嚱鏁般6銆佸畾涔夊嚱鏁扮殑杩斿洖绫诲瀷鍜屽舰鍙傜被鍨嬨7銆侀氳繃if璇彞鍒ゆ柇璇ユ暟鏄惁浠呭墿涓浣嶆暟锛岃嫢涓嶆槸鍒欐墽琛宔lse璇彞銆8...
绛旓細include <stdio.h>#include <stdlib.h>int main(){ char a=0,b; printf("===start===\n"); printf("瀛楁瘝杞垚ASCII锛杈撳叆0閫鍑虹▼搴廫n"); do { printf("杈撳叆涓涓瓧姣:"); scanf("%s",&a); if(a!='0') printf("瀵瑰簲ASCII鐮佸:%d\n",a); else...
绛旓細1.浣跨敤c璇█鑷甫鐨勫簱鍑芥暟锛歛toi銆傚嚱鏁板師鍨嬶細int atoi(const char *nptr);鍔熻兘锛氭妸瀛楃涓杞垚鏁村瀷鏁般備緥濡傦細include <stdlib.h>#include <stdio.h> int main(void){ int n; char *str = "12345"; n = atoi(str); printf("int=%d\n",n); return 0;}/*杈撳嚭锛歩nt = ...
绛旓細ch[i] = 1; break; } } //sscanf(ch, "%d", &i); //濡傛灉鏈鍚庝綘鎶婃墍鏈瀛楁瘝閮鍙樻垚鏁板瓧, 鐒跺悗灏卞彲浠ョ敤杩欎釜搴撳嚱鏁 //鎶婅繖涓瓧绗︿覆閲岀殑鏁板瓧瀛楃鍙樻垚涓涓暣鍨嬪彉閲. return 0;}杩欎笢瑗垮彧鑳戒綘鑷繁涓涓竴涓垽鏂, 鐒跺悗鏇挎崲....
绛旓細include<stdio.h> int main(){ char ch;printf("璇杈撳叆涓涓ぇ鍐欏瓙姣嶏細");ch=getchar();ch=ch+32;printf("%c,%d\n",ch,ch);return 0;}
