0_0_24236937_26010.c:3:1: error: unknown type name 'using'
using namespace std;
^
0_0_24236937_26010.c:3:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
using namespace std;
^
0_0_24236937_26010.c: In function 'main':
0_0_24236937_26010.c:17:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=0;i<len1;i++) {a1[i]=a[len1-i-1]-'0';}
^
0_0_24236937_26010.c:17:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_24236937_26010.c:18:17: error: redefinition of 'i'
for(int i=0;i<len2;i++) {b1[i]=b[len2-i-1]-'0';}
^
0_0_24236937_26010.c:17:17: note: previous definition of 'i' was here
for(int i=0;i<len1;i++) {a1[i]=a[len1-i-1]-'0';}
^
0_0_24236937_26010.c:18:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=0;i<len2;i++) {b1[i]=b[len2-i-1]-'0';}
^
0_0_24236937_26010.c:19:17: error: redefinition of 'i'
for(int i=len1-1;a1[i]==0&&i>=0;i--) {len1--;}
^
0_0_24236937_26010.c:18:17: note: previous definition of 'i' was here
for(int i=0;i<len2;i++) {b1[i]=b[len2-i-1]-'0';}
^
0_0_24236937_26010.c:19:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=len1-1;a1[i]==0&&i>=0;i--) {len1--;}
^
0_0_24236937_26010.c:20:17: error: redefinition of 'i'
for(int i=len2-1;b1[i]==0&&i>=0;i--) {len2--;}
^
0_0_24236937_26010.c:19:17: note: previous definition of 'i' was here
for(int i=len1-1;a1[i]==0&&i>=0;i--) {len1--;}
^
0_0_24236937_26010.c:20:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=len2-1;b1[i]==0&&i>=0;i--) {len2--;}
^
0_0_24236937_26010.c:23:17: error: redefinition of 'i'
for(int i=0;i<len3;i++)
^
0_0_24236937_26010.c:20:17: note: previous definition of 'i' was here
for(int i=len2-1;b1[i]==0&&i>=0;i--) {len2--;}
^
0_0_24236937_26010.c:23:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=0;i<len3;i++)
^
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